Hmm? I haven't used Tracy yet but the demo trace they show at the URL linked on GitHub[1] sure looks like a trace from an application running on Linux. The documentation[2] also seems to reference what you need to run it on Linux, and the NixOS derivation[3] also suggests it runs on at least Linux and macOS, and I was able to run several of the binaries including the UI and capture binary. I still hesitate to doubt you on this because I haven't figured out how one is supposed to actually use it but it surely seems to support Linux. (I will definitely find a use for this, it looks amazing.)

[1]: https://tracy.nereid.pl/

[2]: https://github.com/wolfpld/tracy/releases/latest/download/tr...

[3]: https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/devel...