GTK

GTK (formerly GIMP ToolKit and GTK+) is a free software cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the GNU Lesser General Public License, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the Wayland and X11 windowing systems.

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matplotlib / matplotlib

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Star 21.8k

matplotlib: plotting with Python

python gtk data-science qt data-visualization tk matplotlib plotting wx

Updated Oct 15, 2025
Python

webview / webview

Star 13.4k

Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).

javascript css c html gtk gui library web webview cross-platform cpp webkit webui single-header-lib webview2

Updated Sep 11, 2025
C++

eww

elkowar / eww

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Star 11.6k

ElKowars wacky widgets

linux rust gtk widget gtk-rs desktop gtk3 rust-lang hacktoberfest unixporn eww

Updated Jun 30, 2025
Rust

rnote

flxzt / rnote

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Star 10.4k

Sketch and take handwritten notes.

rust pdf gtk drawing gtk-rs notes hacktoberfest handwriting infinite-canvas notes-app gtk4 wacom-tablet gtk4-rs

Updated Sep 14, 2025
Rust

Alexays / Waybar

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Star 9.5k

Highly customizable Wayland bar for Sway and Wlroots based compositors. ✌️ 🎉

gtk statusbar i3status bar sway wayland wlroots

Updated Oct 5, 2025
C++

WebKit / WebKit

Star 9.2k

Home of the WebKit project, the browser engine used by Safari, Mail, App Store and many other applications on macOS, iOS and Linux.

javascript macos ios gtk browser web webkit

Updated Oct 16, 2025
JavaScript

vinceliuice / WhiteSur-gtk-theme

Star 8k

MacOS like theme for all gtk based desktops

macos gtk gnome gtk3 gtk-theme gtk4

Updated Oct 8, 2025
CSS

foliate

johnfactotum / foliate

Star 7.7k

Read e-books in style

gtk mobi epub ebook-reader opds fb2 cbz gjs azw azw3

Updated Sep 23, 2025
JavaScript

wxWidgets / wxWidgets

Star 6.8k

Cross-Platform C++ GUI Library

windows macos linux c-plus-plus gtk gui cross-platform portable x11 wxwidgets desktop cocoa gui-framework win32 cross-platform-desktop

Updated Oct 16, 2025
C++

r0x0r / pywebview

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Star 5.5k

Build GUI for your Python program with JavaScript, HTML, and CSS

javascript python windows linux html gtk gui qt osx cef cocoa webkit

Updated Oct 13, 2025
Python

akiraux / Akira

Star 5.3k

Native Linux App for UI and UX Design built in Vala and GTK

linux gtk design ui vala ux appcenter hacktoberfest

Updated Oct 6, 2024
Vala

pdfarranger / pdfarranger

Star 4.7k

Small python-gtk application, which helps the user to merge or split PDF documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface.

linux pdf gtk python3 gtk3