Top CUSTOMIZATION GitHub Repositories & Tools (2026)

A modern file manager that helps users organize their files and folders.

A macOS menu-bar app that dresses your windows in knitted borders.

Free, open-source display control for Windows 11: one brightness slider for every monitor (DDC/CI and laptop panels), night light, focus mode, keep awake, per-monitor taskbar hiding and glass, OLED care, your monitor's own settings, hotkeys and a CLI.

😸 Soothing pastel theme for the high-spirited!

Lenovo Legion Toolkit (LLT) is a Windows desktop utility created for Lenovo gaming laptops that replaces Lenovo Vantage, Legion Zone, and Legion Space.

iOS Toolbox using the DarkSword kexploit. iOS 17.0 - iOS 18.7.1 & iOS 26.0.x, excluding M5 and A19.

Firefox CSS Theme/Style for manual customization

An aesthetics-first wallpaper selector and engine with extreme performance that supports images, videos and Wallpaper Engine Scenes. Wallpaper-based theming with Matugen and granular colour fixing as well! Also has a built in Wallhaven.cc & Steam browser because why not. Join us on discord - https://discord.gg/cgxy8EEVmz

🕶️ Glassy Music is extension for music player