There are 6 repositories under steam-library topic.
Linux wrapper tool for use with the Steam client for custom launch options and 3rd party programs
A Hatsune Miku Steam Theme Skin with Steam New Library Supported!
Automatically find games from launchers on your system and import them into your Steam library with a click of a button.
A set of customisable Steam Library tweaks, with an installer. Also a reference that you can use to learn how to make your own tweaks.
Launch GOG games with GOG Galaxy using shortcuts and add shortcuts for GOG games into Steam Library
Automatically generate categories for games in your Steam library
assign steamshop genres to your steam library games, even on private profiles
Steam Backlog is a free tool to manage your Steam library
A short JavaScript script to remove any free games / softwares from your steam library
An utility that add your games from other launchers to your Steam library
An asynchronous, event based python steam trade lib
Complete the Steam Community Badge quests for multiple accounts from Node.js
This batch/powershell script hides that annoying "What's New" shelf or section from your Steam Library (on Windows)
A user-friendly tool to manage auto-update settings for Steam games across multiple libraries. Simplify your Steam game update preferences with ease.
A GUI application to manage Steam grids.
A cross-platform Steam library manager for the command line with heavy focus on emulators
New steam library update how to install