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LibreCAD is a cross-platform 2D CAD program written in C++11 using the Qt framework. It can read DXF and DWG files and can write DXF, PDF and SVG files. The user interface is highly customizable, and has dozens of translations.

✭ 2,602

C++c QMake NSIS shell Redcode qt drawing cad dxf

6. Plotjuggler

The Time Series Visualization Tool that you deserve.

✭ 2,620

C++c CMake QMake python Qt Script mqtt chart csv ros time-series qt5 plot px4 visualize-data rosbag ulog labstreaminglayer

7. Uwebsockets

Simple, secure & standards compliant web server for the most demanding of applications

✭ 13,412

C++c Makefile QMake http cross-platform websockets router pubsub commercial proxy-protocol

8. Smartdeblur

Restoration of defocused and blurred photos/images

✭ 2,140

C++c CMake QMake

9. Capybara Webkit

Thank you, contributors!

✭ 1,989

ruby C++javascript QMake shell

10. Apkstudio

Open-source, cross platform Qt based IDE for reverse-engineering Android application packages.

✭ 2,246

C++QMake android reverse-engineering qt ide qt5 smali apktool java-decompiler apk-decompiler apk-studio android-decompiler

11. Qownnotes

QOwnNotes is a plain-text file notepad and todo-list manager with markdown support and Nextcloud / ownCloud integration.

✭ 2,357

C++Makefile shell CMake QMake javascript markdown qt5 nextcloud note-taking dropbox owncloud caldav nextcloud-notes qownnotes owncloud-notes

12. Moonlight Qt

GameStream client for PCs (Windows, Mac, Linux, and Steam Link)

✭ 2,796

C++QML QMake Objective-C++shell Batchfile qt nvidia sdl2 linux-app macos-app windows-app moonlight gamestream steam-link

13. Natron

Open-source video compositing software. Node-graph based. Similar in functionalities to Adobe After Effects and Nuke by The Foundry.

✭ 2,540

C++c shell tcl python QMake

14. Blackarch

An ArchLinux based distribution for penetration testers and security researchers.

✭ 2,083

shell perl python c C++QMake

15. X64dbg

An open-source x64/x32 debugger for windows.

✭ 37,825

C++c QMake CSS Batchfile assembly hacktoberfest security windows reverse-engineering debugger x86 x86-64 disassembler x64

16. Sqlitestudio

A free, open source, multi-platform SQLite database manager.

✭ 2,337

c C++Yacc QMake tcl shell database qt sqlite qt5 database-management sqlcipher wxsqlite3 sqlite3-database

17. Svg Explorer Extension

Extension module for Windows Explorer to render SVG thumbnails, so that you can have an overview of your SVG files

✭ 2,182

powershell C++Inno Setup c QMake Batchfile

18. Wkhtmltopdf

Convert HTML to PDF using Webkit (QtWebKit)

✭ 11,724

C++QMake

19. Notepadqq

A simple, general-purpose editor for Linux

✭ 1,738

javascript C++HTML QMake python CSS linux editor development text-editor notepadqq

20. Logstalgia

replay or stream website access logs as a retro arcade game

✭ 1,576

C++M4 perl Roff QMake Makefile

21. Mindforger

Thinking notebook and Markdown editor.

✭ 1,695

C++objective c shell QMake CSS python linux macos windows markdown qt ubuntu ide debian research notebook markdown-editor fedora learn knowledge study tarball outliner knowledge-management markdown-ide

22. Iaito

This project has been moved to:

✭ 1,516

C++javascript HTML CSS QMake CMake gui reverse-engineering qt5 radare2

23. Natron

Open-source compositing software. Node-graph based. Similar in functionalities to Adobe After Effects and Nuke by The Foundry.

✭ 1,465

C++c tcl QMake HTML shell cross-platform vfx openfx

24. Qt Creator

A cross-platform Qt IDE

✭ 1,633

C++QML c python CMake QMake

25. Gource

software version control visualization

✭ 8,842

C++M4 perl Roff python QMake

26. Vnote

A pleasant note-taking platform.

✭ 8,714

C++javascript CSS QMake HTML python vim markdown editor note-taking uml mathjax note vnote

27. Tiled

Flexible level editor

✭ 8,411

java C++XSLT python QML QMake hacktoberfest editor game-development qt tile level game map-editor level-editor qt-framework qbs tilesets

28. Stacer

Linux System Optimizer and Monitoring - https://oguzhaninan.github.io/Stacer-Web

✭ 7,405

C++CMake QMake linux monitoring ubuntu system desktop-application optimizer system-information stacer

29. Liteide

LiteIDE is a simple, open source, cross-platform Go IDE.

✭ 6,657

C++c shell CSS QMake Batchfile cross-platform qt ide liteide

30. Leela Zero

Go engine with no human-provided knowledge, modeled after the AlphaGo Zero paper.

✭ 4,787

C++python c CMake Makefile Batchfile QMake

31. Redisdesktopmanager

🔧 Cross-platform GUI management tool for Redis

✭ 19,395

C++QML python QMake NSIS javascript redis database-gui redis-gui redis-gui-client

32. Ricochet

Anonymous peer-to-peer instant messaging

✭ 3,570

C++QML QMake Inno Setup Protocol Buffer shell cross-platform gui privacy messaging tor

33. Gameplay

Open-source, cross-platform, C++ game engine for creating 2D/3D games.

✭ 3,429

C++Objective-C++GLSL QMake CMake Batchfile open-source cross-platform vulkan engine

34. Trojan Qt5

Removed due to regulation

✭ 2,855

C++objective c QMake Objective-C++c HTML

35. Pushpin

Proxy server for adding push to your API

✭ 3,050

C++rust python QMake c PHP shell api proxy websockets streaming realtime push zeromq server-sent-events http-streaming long-polling

36. Ghostwriter

ghostwriter is a cross-platform, aesthetic, distraction-free Markdown editor.

✭ 3,199

C++HTML QMake Objective-C++CSS Roff

37. Qtav

A cross-platform multimedia framework based on Qt and FFmpeg(https://github.com/wang-bin/avbuild). High performance. User & developer friendly. Supports Android, iOS, Windows store and desktops. 基于Qt和FFmpeg的跨平台高性能音视频播放框架

✭ 2,997

C++c QMake python shell CMake video ffmpeg player multimedia qtav

38. B23Downloader

下载B站视频（投稿视频、番剧、电影、课程）、直播、漫画。（使用 Qt C++ 开发）

✭ 337

C++QMake qt bilibili qt-gui

39. gatherer

cross platform gpgpu opengl (es) shader pipeline framework: ogles_gpgpu + qt (UI)

✭ 24

C++QML CMake shell QMake c

40. Object-Counting

Object traking and counting with opencv.