Cross-platform text editor, written in Free Pascal

Qalculate! GTK UI

Clipboard manager with advanced features

The official Vim repository

The Markdown-based note-taking app that doesn't suck.

Official home of the DB Browser for SQLite (DB4S) project. Previously known as "SQLite Database Browser" and "Database Browser for SQLite". Website at:

A cross platform front-end GUI of the popular youtube-dl written in wxPython.

Open-source simulator for autonomous driving research.

Audio Editor

✔️The smallest header-only GUI library(4 KLOC) for all platforms

Command-line program to download videos from YouTube.com and other video sites

The hackable text editor

Open Source Continuous File Synchronization

MAME

Read-only mirror of https://gitlab.gnome.org/GNOME/gtk

Qt Base (Core, Gui, Widgets, Network, ...)

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Desktop Planetarium

World's fastest and most advanced password recovery utility

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

Multi functional app to find duplicates, empty folders, similar images etc.

Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.

Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5

An Open Source Machine Learning Framework for Everyone

SikuliX version 2.0.0+ (2019+)

Flash OS images to SD cards & USB drives, safely and easily.

Cross-Platform C++ GUI Library

Cross-platform Qt web browser

Double Commander is a free cross platform open source file manager with two panels side by side.

Cross-platform desktop GUI app to clean image metadata