GTK+

Ghosttyghostty-org/ghostty

A fast, feature-rich, cross-platform terminal emulator with native UI and GPU acceleration, plus an embeddable library.

Transmissiontransmission/transmission

A fast, easy, and free BitTorrent client with native GUI applications, a headless daemon, and a web UI.

webviewzserge/webview

A tiny cross-platform webview library for C/C++ to build modern cross-platform GUIs using native web engines.

libuiandlabs/libui

A portable C library for creating native GUI applications on Windows, Unix (GTK+), and macOS.

Peekphw/peek

A simple animated GIF screen recorder with an easy-to-use interface for capturing short screencasts of screen areas.

Peekphw/peek

A simple animated GIF screen recorder with an easy-to-use interface for capturing short screencasts of a screen area.

uiandlabs/ui

A platform-native GUI library for Go, enabling simple cross-platform desktop application development.

wxWidgetswxWidgets/wxWidgets

A free, open-source C++ framework for building native-looking GUI applications across Windows, macOS, and Unix platforms.

pywebviewr0x0r/pywebview

A lightweight native webview wrapper for creating desktop GUI applications in Python using HTML, CSS, and JavaScript.

Akiraakiraux/Akira

A native Linux application for UI and UX design, built with Vala and GTK.

Lan Mousefeschber/lan-mouse

A cross-platform, open-source software KVM switch for sharing a single mouse and keyboard across multiple PCs on a local network.

Eto.Formspicoe/Eto

A cross-platform desktop and mobile UI framework for .NET that uses native toolkits for a single codebase.

Korembicheesecakeufo/komorebi

A beautiful and customizable animated wallpapers manager for Linux, supporting images, videos, and web pages.

goxelguillaumechereau/goxel

A free and open-source 3D voxel editor for creating graphics from cubes, available on desktop and mobile platforms.

Grampsgramps-project/gramps

An open-source genealogy program for hobbyists and professional genealogists to research, organize, and visualize family history.

Monomono/monodevelop

A cross-platform integrated development environment (IDE) for .NET applications using Mono and Gtk#.

EttercapEttercap/ettercap

A comprehensive suite for man-in-the-middle attacks, featuring live connection sniffing, content filtering, and protocol dissection.

GoBoyHumpheh/goboy

A multi-platform Nintendo Game Boy and Game Boy Color emulator written in Go, featuring debugging tools and broad game compatibility.

go-scitersciter-sdk/go-sciter

Golang bindings for the Sciter embeddable HTML/CSS/script engine, enabling modern desktop UI development with web technologies.

pffffacebookarchive/pfff

A set of tools and APIs for static analysis, code visualization, navigation, and style-preserving source transformations across multiple languages.

Dinodino/dino

A modern XMPP (Jabber) messaging client for Linux with encryption, calls, and file transfers.

SwayNotifiationCenterErikReider/SwayNotificationCenter

A GTK-based notification daemon and control center for Wayland compositors like Sway.

Gaphorgaphor/gaphor

A free and open-source UML and SysML modeling application written in Python, designed for simplicity and power.

Gear levermijorus/gearlever

A Linux desktop application to integrate, organize, and update AppImages with a modern UI and CLI tools.

LibVLCSharpvideolan/libvlcsharp

Cross-platform .NET/Mono bindings for LibVLC, providing a comprehensive multimedia API for audio and video playback, streaming, and encoding.

Delugedeluge-torrent/deluge

A lightweight, modular BitTorrent client with a daemon/client architecture and multiple user interfaces.

ClipCascadeSathvik-Rao/ClipCascade

ClipCascade is a lightweight, open-source utility that automatically syncs your clipboard across multiple devices with end-to-end encryption.

Flatsealtchx84/Flatseal

A graphical utility to review and modify permissions for Flatpak applications.