Qt

Bitcoin Corebitcoin/bitcoin

The reference implementation of the Bitcoin peer-to-peer network, including a full node, wallet, and GUI.

qBittorrentqbittorrent/qBittorrent

A free and open-source BitTorrent client written in C++/Qt, offering a fast, stable, and feature-rich alternative to other clients.

Telegram Desktoptelegramdesktop/tdesktop

Official open-source desktop client for the Telegram messaging platform, built on the MTProto secure protocol.

shadPS4shadps4-emu/shadPS4

An early PlayStation 4 emulator for Windows, Linux, macOS, and FreeBSD written in C++.

FreeCADFreeCAD/FreeCAD

A free and open-source parametric 3D CAD modeler for designing real-life objects of any size.

FlameShotflameshot-org/flameshot

A powerful, open-source screenshot tool with built-in annotation and editing capabilities for Linux, Windows, and macOS.

KeePassXCkeepassxreboot/keepassxc

A modern, secure, and open-source password manager for storing and managing sensitive information across Windows, macOS, and Linux.

DB Browser for SQLitesqlitebrowser/sqlitebrowser

A high-quality, visual, open-source desktop application for creating, designing, and editing SQLite database files.

Redis Desktop Manageruglide/RedisDesktopManager

Cross-platform GUI desktop application for managing Redis databases with an intuitive visual interface.

Slintslint-ui/slint

A declarative GUI toolkit for building native user interfaces across embedded, desktop, and mobile platforms using Rust, C++, JavaScript, or Python.

Cutterrizinorg/cutter

A free and open-source GUI reverse engineering platform powered by rizin, designed for analyzing binaries and executables.

ActivityWatchActivityWatch/activitywatch

A free, open-source, and privacy-focused automated time tracker that records your computer and browser activity locally.

Moonlightmoonlight-stream/moonlight-qt

An open-source PC client for streaming games and desktop from NVIDIA GameStream and Sunshine servers.

SourcetrailCoatiSoftware/Sourcetrail

A free, cross-platform interactive source explorer for navigating and understanding unfamiliar C, C++, Java, and Python code.

labelmewkentaro/labelme

A graphical image annotation tool written in Python for computer vision tasks like segmentation and detection.

Transmissiontransmission/transmission

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

Shotcutmltframework/shotcut

A free, open-source, cross-platform video editor built on the MLT multimedia framework.

Tiledbjorn/tiled

A flexible, general-purpose tile map editor for creating game levels in RPGs, platformers, and other tile-based games.

CopyQhluk/CopyQ

An advanced clipboard manager with powerful editing, scripting, and cross-platform support.

qttherecipe/qt

A Qt binding for Go that enables writing cross-platform GUI applications in Go, JavaScript, Dart, Haxe, and Swift.

DuckStationstenzek/duckstation

A fast, accurate PlayStation 1 emulator focusing on performance, compatibility, and long-term maintainability across multiple platforms.

Robo 3TStudio3T/robomongo

A native, cross-platform MongoDB GUI client that embeds the mongo shell for shell-centric database management.

openscadopenscad/openscad

A free software for creating solid 3D CAD models using a script-based approach, focusing on CAD rather than artistic modeling.

Staceroguzhaninan/Stacer

A Linux system optimizer and monitoring tool with a graphical interface for performance tuning and cleanup.

Wiresharkwireshark/wireshark

A network protocol analyzer that captures and interactively browses traffic running on a computer network.

Prism LauncherPrismLauncher/PrismLauncher

A custom Minecraft launcher for managing multiple installations, mods, and instances with ease.

Gyroflowgyroflow/gyroflow

An open-source application that stabilizes video using gyroscope and accelerometer data from cameras or external devices.

dupeGuruarsenetar/dupeguru

A cross-platform GUI tool to find duplicate files on your computer, written in Python with a Qt interface.

mGBAmgba-emu/mgba

A fast and accurate Game Boy Advance emulator that also supports Game Boy and Game Boy Color games.

pywebviewr0x0r/pywebview

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

PlotJugglerfacontidavide/PlotJuggler

A fast, powerful, and intuitive desktop application for visualizing and analyzing time series data from files, streams, and robotics systems.

LibreCADLibreCAD/LibreCAD

A free, open-source, cross-platform 2D CAD application for reading and editing DXF/DWG files and exporting to PDF/SVG.

QOwnNotespbek/QOwnNotes

A plain-text file notepad and todo-list manager with Markdown support and Nextcloud/ownCloud integration.

hotspotKDAB/hotspot

A standalone GUI for visualizing and analyzing Linux perf data, featuring flame graphs, timeline filtering, and off-CPU profiling.

melonDSmelonDS-emu/melonDS

A Nintendo DS emulator focused on accuracy and performance, aiming to do things right and fast.

PyQtGraphpyqtgraph/pyqtgraph

A pure-Python graphics library for fast data visualization and GUI tools in scientific and engineering applications.