How can I sort/organize my Steam game library?

My game list is approaching 100 games and it is starting to get difficult to sort them. I've categorized them by genre but it's still difficult to find them (and my backlog is getting bigger).

I also have Steam installed in more than one computer so I have to repeat the sorting for each one of them.

Is there any option to have the games ordered in a nice and clean way?

Edit: About the library sync between computers it could be this problem.

You've got more than just categories in your library. You also have filters. You can filter the list by games you have installed, by games you have played recently and by games you marked as favorites. If you've played that game recently, you'll also find it in Steam's jumplist, or at the top of Steam's tray icon's context menu.

What you really need though is search; nothing really beats that. You don't even have to use Steam for that: if you told Steam to, all of your Steam games (except shortcuts) are added to the start menu. Want Team Fortress 2? Press the ⊞ Win button on your keyboard, type the first letters of the game, press Enter and you'll have it launched faster than any category or filter combo can.

Depressurizer is an application that will help you more easily manage game categories in a large Steam library.

Since your problem is deciding what to play, you order your games as follows:

• Favorites: Games you are currently playing, or games from your backlog that you intend to play soon. Don't be afraid to cut items from this if you stop playing. Your goal is to have as short a a list as possible when you need to pick a game to play.
• Completed: Games that were good, but you finished them, so they aren't candidates for play. Come back to this list if you want to replay an old game or need to uninstall something to make room.
• Rubbish: Games you will probably never play again. Things that were cheap in the Steam sale, or turned out to be really bad.
• No category: Everything else. Your backlog. Things you will play one day, maybe, but not today.

You have only two Steam features that could help you categorize your games: categories and favorites. Favorite mark has priority on category and cause the game to appear in the first group on the left sidebar.

I have too more than hundred games and I created some categories like FPS, RPG, Indie etc and I use the favorites mark to tag games that I play often and games that I am going to start or finish.

You can sort your games by steam user ratings on https://steamdb.info/calculator/