FOSS performance display tool "MangoHud" has been updated to version 0.7.2. This update adds support for Wayland keybinds, added Pop!_OS and SteamOS to build script, added more stats to log summary, fixes eleven bugs, and more. The code is licensed using MIT. Mangohud can be downloaded from various distro repos and as a Flatpak. It's a great tool to give you more info while playing Linux games.
The source code can be found on Github:
https://github.com/flightlessmango/MangoHud
The release notes for this update can be found here:
https://github.com/flightlessmango/MangoHud/releases/tag/v0.7.2
If you wish to help the project financially you can donate to the lead developer Per Hallsten through Paypal: