Greasy Fork is available in English.
User script for humble bundle. Adds steam store links to all games and marks already owned games
Also, doesn't work in containers, i.e. it makes API calls in default container instead of the current tab's container so if I'm logged into Steam in a Firefox container named "steam", it should use the cookie from that container but it doesn't so it can't authorize properly and claims I'm logged out.
Works for some titles but doesn't for others even if the name on Humble is the same as on Steam. Attaching screen of Humble library - you can look for those games in my Steam library, I have all five of them: https://steamcommunity.com/id/cprn/games