Nova Key Holder
Lightweight tool to hold down multiple keys with a single hotkey.
...An optional auto-release stops the keys after a time you choose. Mode, gap and time are saved per preset.
Version 0.3 fixed saved presets not activating their hotkey, keys staying held after the app closed, settings and presets being lost when the app could not write to its own folder, and crashes when no sound device was available. Your settings and presets live in your user folder and carry over automatically.
For Windows (64-bit). Free and open source (Python, MIT license). Source code is available in the Files tab. Feedback appreciated.