What program can i use to do a tool assisted speedrun of PC and Steam games?

For tool-assisted speedrunning (TAS) of PC and Steam games, you can use the emulator BizHawk. BizHawk supports a variety of systems and allows for frame-by-frame control, input recording, and playback, making it ideal for creating precise speedruns. Additionally, you can utilize TAS Editor for more advanced editing and manipulation of the gameplay.