Code3School

Complete Open Source Directory

Developer Softwares

461+ free & open-source tools · 38 categories · All official download links

All Links Official
Code Editors & IDEs 15 Databases & DB Tools 18 Programming Languages & Runtimes 22 Version Control & Collaboration 8 API & HTTP Testing 12 DevOps & Containers 18 Web Servers & Reverse Proxy 8 Build Tools & Package Managers 10 Web Browsers 12 Email Clients 8 Office & Documents 15 Note-taking & Knowledge Base 10 PDF Tools 10 Image Editors & Viewers 20 Media Players 12 Audio Editing & Production 12 Video Editing & Production 15 Screen Capture & Recording 10 3D Modeling & CAD 12 File Managers 10 Compression & Archive Tools 10 Sync, Backup & Recovery 12 Security, Privacy & Encryption 20 Network & Internet Tools 18 System Monitoring & Info 15 Password Managers 8 Remote Desktop & Access 10 Disk & Storage Tools 10 Virtual Machines & Emulators 10 Communication & Team Chat 12 Download Managers 8 Science, Math & Research 12 Data Science & Machine Learning 15 Game Development 12 E-books, Reading & Learning 8 Terminal Emulators 8 Text Processing & Regex Tools 8 Fonts & Design Utilities 8

Code Editors & IDEs

15 tools
Visual Studio Code v1.87 MIT

Lightweight extensible editor by Microsoft, 50+ languages

Download
Notepad++ v8.6.2 GPL-2.0

Fast text and source editor for Windows, macros & plugins

Download
Vim v9.1 Vim

Highly configurable terminal-based text editor

Download
Neovim v0.9.5 Apache-2.0

Modern Vim fork with Lua plugins and LSP support

Download
Eclipse IDE 2024-03 EPL-2.0

Enterprise IDE for Java, C++, PHP — plugin ecosystem

Download
IntelliJ IDEA Community 2024.1 Apache-2.0

Powerful Java IDE by JetBrains — free community edition

Download
PyCharm Community 2024.1 Apache-2.0

Python-focused IDE by JetBrains — free edition

Download
NetBeans 21 Apache-2.0

Apache IDE for Java, PHP, HTML5, JavaScript

Download
Code::Blocks v20.03 GPL-3.0

C, C++, Fortran IDE with customizable compiler

Download
Geany v2.0 GPL-2.0

Lightweight IDE with syntax highlighting for 50+ languages

Download
Brackets v2.2.1 MIT

Modern editor for HTML, CSS, JS — live preview built in

Download
Zed v0.12 GPL-3.0

High-performance multiplayer code editor in Rust

Download
Lite XL v2.1.4 MIT

Lightweight Lua-based text editor, <10MB

Download
Helix v23.10 MPL-2.0

Terminal modal editor with tree-sitter & LSP built-in

Download
Lapce v0.3.1 Apache-2.0

Native GUI code editor built in Rust — fast

Download

Databases & DB Tools

18 tools
MySQL Community Server v8.3 GPL-2.0

World's most popular open-source RDBMS

Download
PostgreSQL v16.2 PostgreSQL

Advanced enterprise-class open-source database

Download
SQLite v3.45 Public Domain

Self-contained serverless SQL engine, zero config

Download
MariaDB v11.3 GPL-2.0

MySQL fork with extra features and performance

Download
MongoDB Community v7.0 SSPL

Document-oriented NoSQL database

Download
Redis v7.2 BSD-3

In-memory data structure store, cache, message broker

Download
CouchDB v3.3.3 Apache-2.0

JSON document DB with HTTP API and sync

Download
InfluxDB v2.7 MIT/Proprietary

Time-series database for metrics and events

Download
Apache Cassandra v5.0 Apache-2.0

Distributed NoSQL DB for massive scale

Download
Neo4j Community v5.18 GPL-3.0

Graph database for connected data

Download
phpMyAdmin v5.2.1 GPL-2.0

Browser-based MySQL/MariaDB admin tool

Download
DBeaver Community v24.0 Apache-2.0

Universal DB tool — MySQL, PG, SQLite, Oracle+

Download
DB Browser for SQLite v3.12.2 MPL-2.0

Visual GUI to create and query SQLite databases

Download
HeidiSQL v12.6 GPL-2.0

Windows DB client for MySQL, MariaDB, SQL Server

Download
Adminer v4.8.1 Apache-2.0

Single-file PHP DB management (MySQL, PG, SQLite)

Download
DataGrip (30-day trial) 2024.1 Proprietary

JetBrains multi-engine SQL IDE

Download
pgAdmin 4 v8.3 PostgreSQL

Official PostgreSQL web-based admin tool

Download
TablePlus v5.9 Freemium

Modern native DB GUI for multiple engines

Download

Programming Languages & Runtimes

22 tools
PHP v8.3.3 PHP

Server-side scripting — powers 77% of the web

Download
Node.js v20.11 LTS MIT

JavaScript runtime on Chrome V8 — non-blocking I/O

Download
Python v3.12.2 PSF-2.0

Readable high-level language — AI, web, scripting

Download
Java OpenJDK v21 LTS GPL-2.0

Open implementation of Java Platform SE

Download
Go (Golang) v1.22 BSD-3

Google language for scalable cloud services

Download
Rust v1.77 MIT/Apache

Systems lang — safety, speed, concurrency

Download
Ruby v3.3.0 Ruby

Dynamic language optimized for developer happiness

Download
Perl v5.38 GPL/Artistic

Text processing powerhouse, CPAN ecosystem

Download
Kotlin v1.9.23 Apache-2.0

Modern JVM language — Android & server-side

Download
Scala v3.4.2 Apache-2.0

JVM language — functional + OOP, Spark ecosystem

Download
R Language v4.3.3 GPL-2.0

Statistical computing and graphics

Download
Julia v1.10.2 MIT

High-performance scientific computing language

Download
Elixir v1.16 Apache-2.0

Erlang-based functional lang for distributed systems

Download
Erlang/OTP v26.2 Apache-2.0

Concurrent fault-tolerant functional language

Download
Lua v5.4.6 MIT

Lightweight embeddable scripting language

Download
Haskell GHC v9.8.1 BSD-3

Purely functional lazy-evaluated language

Download
Dart v3.3 BSD-3

Client-optimized language by Google — Flutter backend

Download
Swift (Linux) v5.10 Apache-2.0

Apple's language now available on Linux & Windows

Download
Clojure v1.11.3 EPL-1.0

Dynamic functional Lisp on JVM

Download
TypeScript v5.4 Apache-2.0

JavaScript with syntax for types — compiles to JS

Download
Crystal v1.12 Apache-2.0

Ruby-like syntax, C performance, compiled

Download
Nim v2.0.2 MIT

Statically typed compiled language — Python-like syntax

Download

Version Control & Collaboration

8 tools
Git v2.44 GPL-2.0

Distributed VCS — industry standard

Download
GitHub Desktop v3.3.8 MIT

GUI client for Git and GitHub workflows

Download
GitLab Community v16.10 MIT

Self-hosted Git + CI/CD platform

Download
Gitea v1.21.7 MIT

Lightweight self-hosted Git service in Go

Download
SourceTree v3.4.17 Freeware

Free Git GUI client for Mac and Windows

Download
GitKraken (Free) v9.13 Freemium

Cross-platform Git GUI with graph visualization

Download
Mercurial v6.7 GPL-2.0

Fast distributed SCM for large projects

Download
Subversion (SVN) v1.14.3 Apache-2.0

Centralized version control system

Download

API & HTTP Testing

12 tools
Postman v10.23 Freemium

API platform — REST, GraphQL, WebSocket testing

Download
Insomnia v9.2.0 MIT

Open-source API client — REST & GraphQL

Download
Bruno v1.10 MIT

Offline API client — Git-friendly, no cloud sync

Download
Hoppscotch v2024 MIT

Browser-based lightweight API testing tool

Download
curl v8.6.0 MIT

Command-line tool for transferring data via URL

Download
HTTPie v3.2.2 BSD-3

Human-friendly HTTP client for terminal

Download
SoapUI Open Source v5.7.2 Apache-2.0

API testing for SOAP and REST services

Download
Katalon Studio Free v9.3 Freemium

API and web automation testing — free tier

Download
k6 v0.50 AGPL-3.0

Open-source load & performance testing tool

Download
JMeter v5.6.3 Apache-2.0

Java-based load testing for web applications

Download
Locust v2.24 MIT

Scalable load testing in Python

Download
Vegeta v12.11 MIT

HTTP load testing tool via command line

Download

DevOps & Containers

18 tools
Docker Desktop v4.28 Apache-2.0

Container platform — build, ship, run anywhere

Download
Podman v4.9.3 Apache-2.0

Daemonless OCI container engine — Docker compatible

Download
Kubernetes (kubectl) v1.29 Apache-2.0

CLI to control Kubernetes clusters

Download
Minikube v1.32.0 Apache-2.0

Local single-node Kubernetes cluster

Download
Helm v3.14.2 Apache-2.0

Kubernetes package manager

Download
Vagrant v2.4.1 MIT

Virtual machine lifecycle automation

Download
Terraform v1.8.0 BSL-1.1

Infrastructure as code — 1000+ providers

Download
Ansible v9.3.0 GPL-3.0

Agentless IT automation — YAML playbooks

Download
Jenkins v2.450 MIT

Open-source CI/CD automation server

Download
GitLab Runner v16.10 MIT

CI/CD pipeline executor for GitLab

Download
Prometheus v2.50 Apache-2.0

Monitoring system and time-series database

Download
Grafana OSS v10.3 AGPL-3.0

Analytics and monitoring dashboards

Download
Logstash v8.12 Elastic

Server-side data processing pipeline (ELK stack)

Download
Kibana v8.12 Elastic

Elasticsearch visualization and dashboarding

Download
Portainer Community v2.20 Zlib

Container management web UI for Docker/K8s

Download
Rancher v2.8 Apache-2.0

Kubernetes management platform — multi-cluster

Download
K3s v1.29 Apache-2.0

Lightweight certified Kubernetes distribution

Download
Nexus Repository OSS v3.67 EPL-1.0

Artifact repository manager — npm, Maven, Docker

Download

Web Servers & Reverse Proxy

8 tools
Apache HTTP Server v2.4.58 Apache-2.0

Most-used web server in the world

Download
Nginx v1.25.4 BSD-2

High-performance web server and reverse proxy

Download
XAMPP v8.2.12 GPL

Apache + MariaDB + PHP + Perl local stack

Download
Caddy v2.7.6 Apache-2.0

Auto-HTTPS modern web server in Go

Download
Lighttpd v1.4.75 BSD

Lightweight web server for high-load environments

Download
HAProxy v2.9 GPL-2.0

High-availability load balancer and proxy

Download
Traefik v3.0 MIT

Cloud-native reverse proxy and load balancer

Download
Squid v6.7 GPL-2.0

Caching proxy for web, supports HTTP/HTTPS/FTP

Download

Build Tools & Package Managers

10 tools
Composer v2.7 MIT

Dependency manager for PHP projects

Download
Maven v3.9.6 Apache-2.0

Java project build tool and dependency manager

Download
Gradle v8.7 Apache-2.0

Flexible build automation for JVM, Android

Download
Make / GNU Make v4.4.1 GPL-3.0

Classic build automation tool

Download
CMake v3.29 BSD-3

Cross-platform build system for C/C++

Download
Webpack v5.90 MIT

JavaScript module bundler for modern apps

Download
Vite v5.1 MIT

Next-gen frontend build tool — blazing fast

Download
Rollup v4.12 MIT

JavaScript module bundler for ES modules

Download
esbuild v0.20 MIT

Extremely fast JavaScript/TypeScript bundler

Download
Bazel v7.1 Apache-2.0

Scalable build system by Google

Download

Web Browsers

12 tools
Mozilla Firefox v124 MPL-2.0

Open-source browser with strong privacy defaults

Download
Chromium v123 BSD

Open-source base browser from Google

Download
Brave Browser v1.64 MPL-2.0

Privacy-first browser with built-in ad blocker

Download
LibreWolf v124.0 MPL-2.0

Firefox fork focused on privacy — no telemetry

Download
Tor Browser v13.0.12 BSD

Anonymous browsing via Tor network

Download
Waterfox G6.0 MPL-2.0

Firefox-based browser, no telemetry, classic UI

Download
Pale Moon v33.3 MPL-2.0

Goanna-engine browser — customizable & nostalgic

Download
Midori v11.2 LGPL-2.1

Ultra-lightweight browser for low-spec devices

Download
Falkon v23.08 GPL-3.0

Qt-based browser from KDE project

Download
Lynx v2.8.9 GPL-2.0

Terminal-based text browser

Download
qutebrowser v3.2.0 GPL-3.0

Keyboard-driven browser with Vim keybindings

Download
Min Browser v1.31 Apache-2.0

Minimalist browser with smart search

Download

Email Clients

8 tools
Thunderbird v115 MPL-2.0

Mozilla's powerful email, calendar, news client

Download
Evolution v3.50 LGPL

GNOME email and calendar — Exchange compatible

Download
Claws Mail v4.2.0 GPL-3.0

Lightweight GTK email client for power users

Download
Sylpheed v3.8.0 GPL-2.0

Simple and highly reliable email client

Download
KMail v23.08 GPL-2.0

KDE full-featured email client with GPG support

Download
Proton Mail Bridge v3.11 GPL-3.0

Sync ProtonMail with IMAP/SMTP clients

Download
Geary v44 LGPL

Simple and modern GNOME email client

Download
Mutt v2.2.13 GPL-2.0

Terminal mail user agent — text-based

Download

Office & Documents

15 tools
LibreOffice v24.2 MPL-2.0

Full office suite — Writer, Calc, Impress, Draw

Download
Apache OpenOffice v4.1.15 Apache-2.0

Community office suite with 6 applications

Download
OnlyOffice Desktop v8.0 AGPL-3.0

MS-Office compatible open-source office suite

Download
WPS Office Free v12.2 Freeware

Clean MS Office-compatible suite — free tier

Download
Calligra Suite v3.2.1 LGPL

KDE office apps — Sheets, Words, Stage

Download
Okular v23.08 GPL-2.0

Universal document viewer — PDF, DJVU, EPUB

Download
Evince v44 GPL-2.0

GNOME document viewer — PDF, PS, DJVU

Download
Sumatra PDF v3.5.2 GPL-3.0

Fast minimal PDF viewer for Windows

Download
FreeOffice 2021 Freeware

Fast MS-compatible office suite — free

Download
AbiWord v3.0.5 GPL-2.0

Lightweight cross-platform word processor

Download
Gnumeric v1.12.57 GPL-2.0

Accurate spreadsheet with advanced statistics

Download
Scribus v1.6.1 GPL-2.0

Professional desktop publishing and layout

Download
Zotero v6.0.36 AGPL-3.0

Research reference manager and bibliography tool

Download
Mendeley Reference Manager v2.111 Freeware

Academic reference and PDF organizer

Download
Calibre v7.7 GPL-3.0

E-book management — convert, sync, read

Download

Note-taking & Knowledge Base

10 tools
Obsidian v1.5 Freeware

Powerful knowledge base with Markdown and graph view

Download
Joplin v2.14 MIT

Open-source encrypted note app with sync

Download
Logseq 0.10.7 AGPL-3.0

Graph-based outliner for notes and todos

Download
AppFlowy v0.5 AGPL-3.0

Open-source Notion alternative — offline-first

Download
Standard Notes v3.196 AGPL-3.0

End-to-end encrypted notes, cross-platform

Download
CherryTree v1.0.4 GPL-3.0

Hierarchical note-taking with rich text and code

Download
Zim Desktop Wiki v0.75.2 GPL-2.0

Plain-text wiki and personal notebook

Download
QOwnNotes v24.3 GPL-2.0

Plain-text Markdown note-taking with OwnCloud sync

Download
Trilium Notes v0.63.5 AGPL-3.0

Hierarchical personal knowledge base web app

Download
Simplenote v2.21 GPL-2.0

Minimalist note-taking synced across all devices

Download

PDF Tools

10 tools
PDFsam Basic v5.2.4 AGPL-3.0

Split, merge, rotate and extract PDF pages

Download
Okular v23.08 GPL-2.0

Universal viewer with PDF annotation support

Download
Sumatra PDF v3.5.2 GPL-3.0

Minimal fast PDF/EPUB/MOBI reader for Windows

Download
Evince v44 GPL-2.0

GNOME PDF and document viewer

Download
PDF24 Creator v11.14 Freeware

Complete free PDF toolkit — Windows/macOS

Download
LibreOffice Draw v24.2 MPL-2.0

Create and export PDFs via LibreOffice

Download
PDFCreator v5.2.2 AGPL-3.0

Print to PDF from any Windows application

Download
MuPDF v1.24 AGPL-3.0

Lightweight PDF renderer — C library and viewer

Download
Ghostscript v10.03 AGPL-3.0

PostScript and PDF interpreter — command-line

Download
Xournal++ v2.2.1 GPL-2.0

Handwriting and PDF annotation app

Download

Image Editors & Viewers

20 tools
GIMP v2.10.36 GPL-3.0

GNU Image Manipulation — professional photo editing

Download
Inkscape v1.3.2 GPL-3.0

Professional vector graphics editor — SVG native

Download
Krita v5.2.2 GPL-3.0

Digital painting and illustration studio

Download
RawTherapee v5.10 GPL-3.0

Non-destructive RAW photo processor

Download
Darktable v4.6.0 GPL-3.0

Virtual lighttable and darkroom for photographers

Download
digiKam v8.3.0 GPL-2.0

Advanced photo management application

Download
Shotwell v0.32 LGPL

GNOME personal photo organizer

Download
XnView MP v1.5.3 Freeware

Fast image viewer for 500+ formats

Download
IrfanView v4.67 Freeware

Lightweight Windows image viewer and converter

Download
ImageMagick v7.1.1 ImageMagick

Command-line image manipulation — resize, convert

Download
Pinta v2.1.1 MIT

Simple MS-Paint-like editor for Linux and macOS

Download
MyPaint v2.0.1 GPL-2.0

Simple painting for digital artists

Download
Hugin v2023.0 GPL-2.0

Panorama photo stitcher and HDR compositor

Download
ExifTool v12.78 GPL/Artistic

Read, write, edit EXIF/IPTC metadata

Download
gThumb v3.12 GPL-2.0

Image browser, viewer, and organizer for GNOME

Download
Fotoxx v24.0 GPL-3.0

Photo editing and collection management

Download
Luminance HDR v2.6.1 GPL-2.0

HDR image creation and tone mapping

Download
F3D v2.3 BSD-3

Fast and minimalist 3D and scientific file viewer

Download
Photopea Online web Freemium

Full Photoshop-compatible editor — browser-based

Download
JPEG-XL Reference v0.10 Apache-2.0

Next-gen image codec — cjxl/djxl tools

Download

Media Players

12 tools
VLC Media Player v3.0.20 GPL-2.0

Plays everything — local, network, DVDs, streams

Download
MPV v0.37.0 GPL-2.0

Minimalist scriptable media player — GPU render

Download
MPC-BE v1.6.10 GPL

Media player based on MPC-HC with extra codecs

Download
Kodi v21.0 GPL-2.0

Open-source home theater — plugins, streaming

Download
SMPlayer v23.6 GPL-2.0

Qt-based front-end for MPV and MPlayer

Download
Strawberry Music Player v1.0.22 GPL-3.0

Music organizer and player with tag editor

Download
Audacious v4.3.2 BSD-2

Winamp-style lightweight music player

Download
foobar2000 v2.1.5 Freeware

Highly customizable advanced audio player

Download
Clementine v1.4.0 GPL-3.0

Cross-platform music player and library manager

Download
Rhythmbox v3.4.7 GPL-2.0

GNOME music management application

Download
Elisa v23.08 LGPL

KDE music player aiming for simplicity

Download
QuodLibet v4.6.0 GPL-2.0

Advanced tag-aware audio player and manager

Download

Audio Editing & Production

12 tools
Audacity v3.5.1 GPL-3.0

Multi-track audio editor and recorder

Download
LMMS v1.2.2 GPL-2.0

Full-featured DAW — beats, synths, MIDI

Download
Ardour v8.4 GPL-2.0

Professional DAW — recording, editing, mixing

Download
Rosegarden v23.12 GPL-2.0

MIDI sequencer and notation editor

Download
MuseScore 4 v4.2 GPL-3.0

Music notation and score creation

Download
Tenacity v1.3 GPL-2.0

Privacy-respecting Audacity fork

Download
Mixxx v2.4.0 GPL-2.0

DJ software for live mixing and broadcasting

Download
SoX (Sound eXchange) v14.4.2 LGPL

Command-line audio converter and effects

Download
Ocenaudio v3.12.8 Freeware

Simple cross-platform audio editor

Download
Reaper (60-day trial) v7.14 Shareware

Professional DAW — lightweight, powerful

Download
VoiceMeeter Banana v2.0.6.4 Donationware

Windows virtual audio mixer and routing

Download
BlackHole (macOS) v0.6.0 GPL-3.0

Virtual audio driver for macOS routing

Download

Video Editing & Production

15 tools
OBS Studio v30.1 GPL-2.0

Open broadcast software — stream and record

Download
Kdenlive v23.08 GPL-2.0

KDE non-linear video editor — multi-track

Download
Shotcut v24.02 GPL-3.0

Cross-platform video editor — 400+ filters

Download
OpenShot v3.1.1 GPL-3.0

Award-winning easy video editor

Download
Blender v4.1 GPL-3.0

3D, VFX, video editing, motion graphics studio

Download
HandBrake v1.7.3 GPL-2.0

Video transcoder — convert any format to MP4/MKV

Download
FFmpeg v6.1.1 LGPL-2.1

Command-line multimedia framework — encode/decode anything

Download
DaVinci Resolve Free v19 Freeware

Hollywood-grade color correction and editing

Download
Avisynth+ v3.7.3 GPL-2.0

Frameserver and scripting for video processing

Download
MKVToolNix v83.0 GPL-2.0

Create, inspect, edit MKV video containers

Download
MediaInfo v24.01 BSD-2

Technical metadata viewer for audio/video files

Download
SubEdit / Subtitle Edit v3.6.15 GPL-3.0

Create and translate subtitles, OCR DVDs

Download
VirtualDub2 v6.7.0 GPL-2.0

Video capture and processing — extended VirtualDub

Download
Natron v2.5.0 GPL-2.0

Node-based VFX compositor — Nuke-like

Download
Flowblade v2.12 GPL-3.0

Fast multitrack video editor for Linux

Download

Screen Capture & Recording

10 tools
ShareX v16.0.1 GPL-3.0

Feature-rich screenshot and recording for Windows

Download
Flameshot v12.1.0 GPL-3.0

Powerful screenshot tool with annotation

Download
Greenshot v1.2.10 GPL-3.0

Fast screenshot with built-in editor and upload

Download
Ksnip v1.10.1 GPL-2.0

Qt-based screenshot and annotation tool

Download
KDE Spectacle v23.08 GPL-2.0

KDE screenshot utility with region selection

Download
GNOME Screenshot v41 GPL-2.0

Simple screen capture for GNOME desktop

Download
Peek v1.5.1 GPL-3.0

Animated GIF screen recorder for Linux

Download
ScreenToGif v2.39 MS-PL

Record screen, webcam and sketchboard to GIF/video

Download
Kazam v1.4.5 GPL-3.0

Simple screencast recorder for Linux

Download
SimpleScreenRecorder v0.4.4 GPL-3.0

Feature-rich Linux screen recorder

Download

3D Modeling & CAD

12 tools
Blender v4.1 GPL-3.0

Industry-grade 3D creation — modeling, animation, VFX

Download
FreeCAD v0.21.2 LGPL-2.0

Parametric 3D CAD modeler for engineering and design

Download
OpenSCAD v2021.01 GPL-2.0

Script-based 3D solid modeler for programmers

Download
LibreCAD v2.2.0.2 GPL-2.0

Free 2D CAD application — DXF native

Download
SolveSpace v3.1 GPL-3.0

Parametric 3D CAD for mechanical design

Download
Wings 3D v2.4 BSD-3

Subdivision modeler for game assets

Download
Meshroom v2023.3 MPL-2.0

Photogrammetry software — 3D from photos

Download
MeshLab v2023.12 GPL-3.0

Mesh processing and editing tool

Download
Ultimaker Cura v5.7 LGPL-3.0

3D printing slicer for most printers

Download
PrusaSlicer v2.7.4 AGPL-3.0

Advanced 3D print slicer by Prusa

Download
F360 Fusion (Free) Free Freeware

3D CAD/CAM for hobbyists and students

Download
BRL-CAD v7.38 LGPL

US Army open-source solid modeling system

Download

File Managers

10 tools
Double Commander v1.1.15 GPL-2.0

Dual-panel orthodox file manager — cross-platform

Download
Total Commander (trial) v11.0 Shareware

Feature-rich dual-panel file manager for Windows

Download
FreeCommander XE v2023.11 Freeware

Replacement for Windows Explorer — dual panel

Download
Midnight Commander v4.8.31 GPL-3.0

Classic text-based dual-panel file manager

Download
Ranger v1.9.3 GPL-3.0

Vi-influenced terminal file manager

Download
Thunar v4.18 GPL-2.0

XFCE lightweight and extensible file manager

Download
Dolphin v23.08 GPL-2.0

KDE feature-rich file manager with tabs

Download
Nautilus / Files v45 GPL-3.0

GNOME Files — default GNOME file manager

Download
Nemo v5.8 GPL-2.0

Cinnamon file manager — fork of Nautilus

Download
Q-Dir v11.82 Freeware

Quad-pane file manager for Windows

Download

Compression & Archive Tools

10 tools
7-Zip v24.01 LGPL-2.1

Open-source archiver — highest compression ratio

Download
PeaZip v9.7.0 LGPL

Portable archiver supporting 200+ formats

Download
WinRAR (trial) v7.00 Shareware

Popular ZIP/RAR/7Z archiver for Windows

Download
WinZip (trial) v28 Shareware

Classic Windows zip utility

Download
Ark v23.08 GPL-2.0

KDE archiver — zip, tar, rar, 7z support

Download
File Roller v43 GPL-2.0

GNOME archive manager — GUI for tar/zip

Download
Engrampa v1.26.1 GPL-2.0

MATE archive manager — GNOME-compatible

Download
Zstd v1.5.5 BSD-3

Real-time lossless compression algorithm by Facebook

Download
Brotli v1.1.0 MIT

Google's compression algorithm for web

Download
LZ4 v1.9.4 BSD-2

Extremely fast lossless compression

Download

Sync, Backup & Recovery

12 tools
Syncthing v1.27.4 MPL-2.0

Continuous decentralized file sync — no cloud needed

Download
Rclone v1.66.0 MIT

Command-line sync to 70+ cloud storage providers

Download
FreeFileSync v13.3 GPL-3.0

Folder comparison and sync tool

Download
rsync v3.3.0 GPL-3.0

Fast incremental file transfer utility

Download
Duplicati v2.0.7.1 LGPL-2.1

Backup to cloud — encrypted, deduplicated

Download
Restic v0.16.3 BSD-2

Fast, secure, encrypted backup program

Download
Clonezilla v3.1.2 GPL-3.0

Disk cloning and imaging — bare metal backup

Download
Macrium Reflect Free v8.1 Freeware

Windows disk imaging and backup

Download
AOMEI Backupper Standard v7.3 Freeware

Windows backup, sync, clone — free edition

Download
BorgBackup v1.4.0 BSD-3

Deduplicating archiver with compression and encryption

Download
Kopia v0.16 Apache-2.0

Fast, encrypted, incremental backup tool

Download
TestDisk v7.2 GPL-2.0

Data recovery for lost partitions

Download

Security, Privacy & Encryption

20 tools
KeePassXC v2.7.7 GPL-3.0

Cross-platform password manager — offline

Download
Bitwarden Desktop v2024.2 GPL-3.0

Open-source cloud password manager

Download
VeraCrypt v1.26.7 Apache-2.0

Disk encryption — successor to TrueCrypt

Download
GnuPG v2.4.5 GPL-3.0

GNU implementation of OpenPGP encryption standard

Download
OpenVPN v2.6.9 GPL-2.0

Open-source VPN — SSL/TLS tunneling

Download
WireGuard v1.0 GPL-2.0

Modern fast VPN protocol — minimal attack surface

Download
Tor Browser v13.0.12 BSD

Anonymous web browsing via onion routing

Download
Wireshark v4.2.4 GPL-2.0

Network protocol analyzer — packet capture

Download
Nmap v7.94 GPL-2.0

Network mapper — port scanning, host discovery

Download
OWASP ZAP v2.14.0 Apache-2.0

Web app security scanner — penetration testing

Download
Burp Suite Community v2024.1 Freeware

Web security testing platform — free edition

Download
ClamAV v1.3.0 GPL-2.0

Open-source antivirus engine — email gateway use

Download
Malwarebytes Free v5.1 Freeware

Anti-malware on-demand scanner

Download
Hashcat v6.2.6 MIT

World's fastest password recovery tool

Download
John the Ripper v1.9.0 GPL-2.0

Password security auditing and cracking

Download
Aircrack-ng v1.7 GPL-2.0

Wi-Fi network security auditing suite

Download
ProtonVPN (Free) v3.2 GPL-3.0

No-logs VPN — free tier with core features

Download
Cryptomator v1.12.3 GPL-3.0

Client-side encryption for your cloud files

Download
Veracode (free scan) online Freemium

Application security testing platform

Download
OpenSSL v3.2.1 Apache-2.0

Cryptography and SSL/TLS library — dev essential

Download

Network & Internet Tools

18 tools
Angry IP Scanner v3.9.1 GPL-2.0

Fast cross-platform IP and port scanner

Download
Advanced IP Scanner v2.5 Freeware

Windows LAN scanner — remote control support

Download
Netdata v1.44 GPL-3.0

Real-time server and application monitoring

Download
Prometheus v2.50 Apache-2.0

Metrics collection and time-series DB

Download
Grafana v10.3 AGPL-3.0

Metrics visualization and alerting dashboard

Download
Pi-hole v5.18 EUPL

Network-wide ad blocker via DNS sinkhole

Download
AdGuard Home v0.107.45 GPL-3.0

DNS-based ad and tracker blocker

Download
Helm (K8s) v3.14 Apache-2.0

Kubernetes package manager

Download
WinMTR v1.10 GPL-2.0

Network diagnostic tool — MTR for Windows

Download
PuTTY v0.80 MIT

SSH and Telnet client for Windows

Download
OpenSSH Client built-in BSD

Secure shell — encrypted remote access

Download
FileZilla FTP v3.67.0 GPL-2.0

Free FTP, FTPS and SFTP client

Download
WinSCP v6.3.2 GPL-3.0

SFTP/FTP/SCP/WebDAV client for Windows

Download
MobaXterm (Free) v23.4 Freeware

Ultimate terminal for Windows — SSH, X11, SFTP

Download
Termius (Free) v8.9 Freemium

SSH client and terminal — cross platform

Download
tcpdump v4.99.4 BSD

Command-line network packet analyzer

Download
Zeek (Bro) v6.2 BSD

Open-source network traffic analysis framework

Download
Netcat (ncat) via Nmap MIT

Networking utility — open TCP/UDP connections

Download

System Monitoring & Info

15 tools
CPU-Z v2.09 Freeware

Detailed CPU, memory, mainboard info — Windows

Download
GPU-Z v2.57 Freeware

Graphics card specification and monitoring

Download
HWiNFO v7.72 Freeware

Comprehensive hardware analysis and monitoring

Download
CrystalDiskInfo v9.2.2 MIT

HDD/SSD health monitoring via S.M.A.R.T

Download
MSI Afterburner v4.6.5 Freeware

GPU overclocking and real-time monitoring

Download
Process Monitor (Sysinternals) v3.96 Freeware

Real-time Windows file system and registry monitor

Download
Process Explorer (Sysinternals) v17.06 Freeware

Advanced Task Manager replacement

Download
Autoruns (Sysinternals) v14.11 Freeware

Show everything that auto-starts in Windows

Download
Glances v4.0.3 LGPL-3.0

Cross-platform system monitoring tool — CLI

Download
htop v3.3.0 GPL-2.0

Interactive process viewer for Linux/macOS

Download
btop v1.3.2 Apache-2.0

Beautiful resource monitor — all platforms

Download
Stacer v1.1.0 GPL-3.0

Linux system optimizer and monitor — GUI

Download
Everything Search v1.4.1.1024 Freeware

Instant file search for Windows

Download
WinDirStat v2.1.0 GPL-2.0

Windows disk usage visualization — treemap

Download
TreeSize Free v4.7.3 Freeware

Disk space manager and usage tree

Download

Password Managers

8 tools
KeePassXC v2.7.7 GPL-3.0

Offline cross-platform password manager

Download
Bitwarden v2024.2 GPL-3.0

Open-source cloud password manager

Download
KeePass 2 v2.57 GPL-2.0

Windows offline password database

Download
Passbolt Community v4.6 AGPL-3.0

Team password manager — self-hosted

Download
Padloc v4.13 GPL-3.0

Zero-knowledge end-to-end encrypted password manager

Download
Lesspass v9.6 GPL-3.0

Stateless password manager — generates passwords

Download
Enpass (Free) v6.9 Freemium

Offline password manager — free for PC

Download
Password Safe v3.63.0 Artistic-2.0

Bruce Schneier's password safe — Windows/Linux

Download

Remote Desktop & Access

10 tools
AnyDesk (Free) v8.0.8 Freemium

Fast remote desktop — 60fps compression

Download
RealVNC Free v7.9 Freemium

VNC remote desktop — cross-platform

Download
TigerVNC v1.13.1 GPL-2.0

High-performance VNC server and client

Download
TightVNC v2.8.85 GPL-2.0

Efficient VNC remote control software

Download
RustDesk v1.2.4 AGPL-3.0

Open-source TeamViewer alternative — self-host

Download
Remmina v1.4.35 GPL-2.0

Feature-rich remote desktop client for Linux

Download
OpenRDP (FreeRDP) v3.4.0 Apache-2.0

Open-source RDP client and server

Download
NoMachine (Free) v8.11 Freeware

Ultra-fast remote display — NX protocol

Download
Guacamole v1.5.4 Apache-2.0

Clientless web-based remote desktop gateway

Download
XRDP v0.9.24 Apache-2.0

Open-source RDP server for Linux

Download

Disk & Storage Tools

10 tools
GParted v1.6.0 GPL-2.0

Graphical partition editor — resize, move, create

Download
Rufus v4.4 GPL-3.0

Bootable USB creator — fastest ISO burner

Download
Etcher (balenaEtcher) v1.19.21 Apache-2.0

Cross-platform bootable USB flasher

Download
Ventoy v1.0.97 GPL-3.0

Multi-boot USB — just copy ISOs to USB

Download
CrystalDiskMark v8.0.5 MIT

Disk benchmark tool for Windows

Download
ATTO Disk Benchmark v4.02 Freeware

Professional storage performance benchmark

Download
AS SSD Benchmark v2.0.7316 Freeware

SSD benchmark tool for Windows

Download
Disk2vhd v2.02 Freeware

Convert physical disk to VHD/VHDX

Download
DiskGenius Free v5.5.0 Freeware

Partition management and data recovery — free

Download
Acronis True Image (trial) v2023 Trialware

Disk cloning and backup solution

Download

Virtual Machines & Emulators

10 tools
VirtualBox v7.0.14 GPL-2.0

Powerful x86 and AMD64 VM hypervisor

Download
VMware Workstation Player (Free) v17.5.1 Freeware

Run VMs on Windows and Linux — free non-commercial

Download
QEMU v8.2.2 GPL-2.0

Generic open-source machine emulator

Download
Hyper-V built-in Freeware

Windows built-in Type-1 hypervisor

Download
Vagrant v2.4.1 MIT

VM lifecycle automation with provider support

Download
GNOME Boxes v44 LGPL

Simple VM manager for GNOME desktop

Download
Virt-Manager v4.1.0 GPL-2.0

Linux desktop VM manager for libvirt/KVM

Download
DOSBox v0.74-3 GPL-2.0

MS-DOS emulator for old games and software

Download
RetroArch v1.17.0 GPL-3.0

Multi-system game console emulator frontend

Download
RPCS3 latest GPL-2.0

PlayStation 3 emulator and debugger

Download

Communication & Team Chat

12 tools
Signal Desktop v7.7 AGPL-3.0

End-to-end encrypted messenger — gold standard

Download
Element (Matrix) v1.11.56 Apache-2.0

Decentralized chat — open Matrix protocol

Download
Rocket.Chat v6.6 MIT

Open-source team messaging — self-hosted

Download
Mattermost Desktop v5.6.1 MIT

Slack alternative — open-source team messaging

Download
Jitsi Meet Desktop v2024.2 Apache-2.0

Open-source video conferencing — no account needed

Download
Mumble v1.5.634 BSD

Low-latency VOIP for gaming and groups

Download
Telegram Desktop v5.0 GPL-3.0

Fast cloud-based messenger — large group support

Download
Pidgin v2.14.13 GPL-2.0

Universal IM client — AIM, IRC, XMPP, etc.

Download
HexChat v2.16.1 GPL-2.0

IRC chat client — cross-platform

Download
WeeChat v4.2.1 GPL-3.0

Fast terminal IRC client with script support

Download
Dino v0.4.4 GPL-3.0

Modern XMPP chat client for Linux

Download
Thunderbird (as client) v115 MPL-2.0

Email + chat (IRC/Matrix via add-on)

Download

Download Managers

8 tools
Free Download Manager v6.21 GPL-2.0

Accelerate downloads — BitTorrent + HTTP + FTP

Download
qBittorrent v5.0.0 GPL-2.0

Cross-platform BitTorrent client — no ads

Download
Deluge v2.1.1 GPL-3.0

Lightweight cross-platform BitTorrent client

Download
Transmission v4.0.5 GPL-2.0

Simple BitTorrent client — minimal UI

Download
aria2 v1.37.0 GPL-2.0

Lightweight multi-protocol download utility — CLI

Download
JDownloader 2 v2.0 GPL-3.0

Download manager for online hosters — free

Download
uGet v2.2.3 LGPL

Linux download manager with multi-connection

Download
Persepolis v3.2.0 GPL-3.0

GUI for aria2 — pretty download manager

Download

Science, Math & Research

12 tools
GNU Octave v9.1 GPL-3.0

MATLAB-compatible numerical computing environment

Download
SageMath v10.3 GPL-3.0

Open-source algebra, calculus, number theory

Download
Scilab v2023.1 CECILL

Free alternative to MATLAB for engineering

Download
R Statistical Computing v4.3.3 GPL-2.0

Stats, graphics, data analysis platform

Download
JASP v0.18.3 GPL-2.0

User-friendly Bayesian statistics — spreadsheet UI

Download
PSPP v2.0.0 GPL-3.0

Free SPSS replacement for statistical analysis

Download
GeoGebra Desktop v6.0 GPL-3.0

Dynamic math for geometry, algebra, calculus

Download
Maxima v5.47 GPL-2.0

Computer algebra system — symbolic manipulation

Download
wxMaxima v24.02 GPL-2.0

GUI front-end for Maxima CAS

Download
KNIME Analytics v5.2 GPL-3.0

Data pipeline and visual analysis platform

Download
Orange Data Mining v3.36 GPL-3.0

Visual interactive ML and data analysis

Download
ROOT (CERN) v6.30 LGPL-2.1

C++ data analysis framework for particle physics

Download

Data Science & Machine Learning

15 tools
Anaconda v2024.02 BSD-3

Python/R data science platform — conda + Jupyter

Download
Jupyter Notebook v7.0 BSD-3

Interactive Python notebooks for data analysis

Download
JupyterLab v4.1 BSD-3

Next-gen web interface for Project Jupyter

Download
RStudio Desktop v2024.03 AGPL-3.0

IDE for R — plots, data, console, scripts

Download
KNIME v5.2 GPL-3.0

Visual data pipeline builder — drag and drop

Download
Weka v3.9.6 GPL-3.0

Java ML workbench — classification, clustering

Download
RapidMiner Studio (Free) v10.3 AGPL-3.0

Visual machine learning platform — free tier

Download
MLJAR Studio v1.0 MIT

AutoML Python tool — model training pipeline

Download
DVC (Data Version Control) v3.40 Apache-2.0

ML pipeline and dataset versioning

Download
Label Studio v1.11 Apache-2.0

Open-source data labeling tool for ML

Download
NNI (Neural Architecture Search) v3.0 MIT

AutoML toolkit by Microsoft

Download
MLflow v2.11 Apache-2.0

Open-source ML lifecycle tracking platform

Download
PyCaret v3.3.1 MIT

Low-code ML library for Python

Download
H2O.ai v3.44 Apache-2.0

Open-source ML and AutoML platform

Download
LM Studio v0.2.21 Freeware

Run LLMs locally — Llama, Mistral, Phi on desktop

Download

Game Development

12 tools
Godot Engine v4.2.1 MIT

Feature-packed cross-platform 2D/3D game engine

Download
Unity (Personal Free) v2022.3 Proprietary

Industry-leading game engine — free for personal use

Download
Unreal Engine (Free) v5.3 Custom

AAA game engine with Lumen & Nanite — royalty model

Download
LÖVE v11.5 MIT

2D game framework for Lua — super simple

Download
LibGDX v1.12.1 Apache-2.0

Java cross-platform game dev framework

Download
Pygame v2.5.2 LGPL

Python library for 2D game development

Download
Phaser v3.80 MIT

HTML5 game framework — 2D browser games

Download
MonoGame v3.8.1 MIT

Open-source XNA successor — C# game dev

Download
OpenRA v20231010 GPL-3.0

Open-source RTS game engine — C&C remake

Download
Tiled Map Editor v1.10.2 GPL-2.0

Flexible level editor for tile-based games

Download
LDtk v1.5.3 MIT

Modern 2D level editor by Deepnight Games

Download
Bevy Engine v0.13 MIT/Apache

Data-driven Rust game engine — ECS architecture

Download

E-books, Reading & Learning

8 tools
Calibre v7.7 GPL-3.0

Complete e-book management, conversion, sync

Download
Foliate v3.1.1 GPL-3.0

Modern e-book reader for Linux

Download
Koodo Reader v1.6.3 AGPL-3.0

Open-source e-book reader — epub, mobi, PDF

Download
Okular v23.08 GPL-2.0

Universal document reader — PDF, EPUB, DJVU

Download
Sumatra PDF v3.5.2 GPL-3.0

Reads PDF, EPUB, MOBI, CBZ, CHM

Download
EPUBee v5.0 Freemium

EPUB e-book manager and DRM remover

Download
Thorium Reader v2.3.0 BSD-3

EPUB3 and PDF reader — accessibility focused

Download
Anki v24.04 AGPL-3.0

Spaced repetition flashcards — learn anything

Download

Terminal Emulators

8 tools
Windows Terminal v1.19 MIT

Modern tabbed terminal for PowerShell, WSL, CMD

Download
Alacritty v0.13.2 MIT

GPU-accelerated terminal emulator in Rust

Download
Kitty v0.33.1 GPL-3.0

Fast GPU-based terminal with tiling support

Download
WezTerm v20240130 MIT

GPU-accelerated terminal with Lua config

Download
Hyper v3.4.1 MIT

HTML/CSS/JS-based terminal emulator

Download
Tabby v1.0.206 MIT

Configurable terminal for local/SSH/serial

Download
Terminus (Tabby) v1.0.206 MIT

Modern terminal emulator — same as Tabby

Download
Tilix v1.9.6 MPL-2.0

Tiling terminal emulator for GTK3

Download

Text Processing & Regex Tools

8 tools
Notepad++ v8.6.2 GPL-2.0

Text editor with regex search, macros, column edit

Download
grepWin v2.0.14 GPL-2.0

Regex search tool for Windows files

Download
RegexBuddy v4.14 Shareware

Interactive regex builder and tester

Download
Regex101 (online) web Free

Online regex tester — all flavors supported

Download
AgentRansack v2024.1 Freeware

Free file content search tool for Windows

Download
ripgrep v14.1.0 MIT

Ultra-fast recursive code search CLI

Download
fd-find v10.0.0 MIT

Simple, fast alternative to GNU find

Download
jq v1.7.1 MIT

Lightweight JSON processor — command line

Download

Fonts & Design Utilities

8 tools
FontForge v2023.01 GPL-3.0

Open-source font editor — create/edit TTF, OTF

Download
Birdfont v4.30 GPL-3.0

Font editor for vector graphics and fonts

Download
Google Fonts (download) web OFL

Free open-source designer fonts — 1500+ families

Download
Figma Desktop (free) v116 Freemium

Collaborative UI/UX design tool

Download
Penpot v2.0 MPL-2.0

Open-source Figma alternative — self-hostable

Download
Gravit Designer v4.2.2 Freemium

Cross-platform vector editor

Download
Canvg v4.0.2 MIT

SVG to Canvas renderer

Download
Vectr web Freeware

Free lightweight online/offline vector editor

Download

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