fps topic
SkyOfSteel
Git repo and bug tracker for SkyOfSteel
qengine
Retro game engine for creating games like it's 1997
GLXOSD
GLXOSD is an extensible on-screen display (OSD)/overlay for OpenGL applications running on Linux with X11 which aims to provide similar functionality to MSI Afterburner/RivaTuner OSD. It can show FPS,...
srcrepair
SRC Repair is a free open source tool that can be used for tuning and cleaning up Steam and Source engine games.
fpsviewer
A Real-time Fps Tool for Android
chocolate-doom
Chocolate Doom is a Doom source port that is minimalist and historically accurate.
openspades
Compatible client of Ace of Spades 0.75
doomretro
The classic, refined DOOM source port. For Windows PC.