The following software works great with the Steam Deck and might enhance your RetroDECK experience (these are entirely optional to install).
There is a guide on how to install several of them under [Steam Deck: Optimizations](https://github.com/XargonWan/RetroDECK/wiki/Steam-Deck%3A-Optimizations).
For general Linux Desktop recommendations go to [Linux Desktop: Software recommendations](https://github.com/XargonWan/RetroDECK/wiki/Linux-Desktop-Software-recommendations) as many of them also work on the Steam Deck.
Is a great piece of software that allows custom plugins inside Steam Deck's gamemode. It can open up more advanced features then the standard Steam Deck experience offers. But it's a bit more technical to install, please follow the guide on their github.
If you install the Decky Plugin Loader above you can download the PowerTools application from the plugin store that let's you do advanced tweaking of the Steam Decks hardware. This can greatly improve performance on certain games in the PS2,GC and above generations. But it requires you to find the knowledge of what setting works best for each game and/or emulator.