Useful tools you can use during runs:

• dinput for fixing your mouse not working in-game
• VC Mouse Fix for fixing y-sens issues, and the game resetting mouse sens every reset
• Use this method for Xbox360 controller support
• Cursor jail to keep the cursor inside the game (useful if you are playing fullscreen)
• Windowers (dxwnd, d3dwindower , 3DAnalyze )
• SKeys or NohBoard for showing keyboard inputs on recordings
• 100% checklist
• GTARadioPlayer
• AutoHotKey (Allowed to create 1:1 rebinds only)

Other useful tools you can use for practice and testing but not during runs:

• Quicksave
• On Mission Flag changer (For III/VC/SA)
• Cheat Engine
• Vehicle Saver