Theme GitHub Repositories (2026) · Open Source Tools

A design system for AI applications. Material, physical, tactile, technical.

🙃 A delightful community-driven (with 2,500+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.

😸 Soothing pastel theme for the high-spirited!

ReaLTaiizor is a .NET WinForms control library that offers a wide range of components and is user-friendly and design-focused.

Colorful, themeable Claude Code replies: tables, code, diagrams, charts and tool rows in 15 themes, with copy buttons. A Claude Code mod.

Materialious is a modern material design frontend for YouTube & Invidious, focused on a clean, privacy-friendly YouTube experience. It supports local video fallback when Invidious fails and is available on Web, Desktop, Android, and Android TV.

Modern JavaFX CSS theme collection with additional controls.

Skins for Claude Code: tool rows with icons, diff, table and Mermaid chart cards, a usage band and fifteen themes. /skin swaps them live.

Google's Material Design in XAML & WPF, for C# & VB.Net.

Iconify lets you customize your Android 12+ device easily. Change icons, colors, shapes, and even the notification panel for a personalized look that suits your style.

macOS menu bar & Windows tray app pinning Claude Code, Codex, Antigravity & Grok CLI quota, burn rate, and cost to your screen. Local-first, no telemetry. HTML reports, 16 themes.

Cross platform GUI toolkit in Go inspired by Material Design

Avalonia theme inspired by Semi Design

Simple, Fast, Secure, Flat-File CMS

Hugo theme for open source documentation

DevWinUI is a collection of useful classes, controls, styles, and codes for WinUI 3. Create a WinUI app in less than a minute with the built-in project templates and scaffolding tools.

An update to Component factory's krypton toolkit to support .NET Framework 4.6.2 - 4.8.1 to .NET 8 - 10

A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.

A simple, delicate, and modern theme for the static site generator Hexo.

Modern Django Admin