GTA San Andreas Progress Checklist

An interactive checklist for tracking progress in GTA San Andreas.

Features:

1. Saving: it's possible to save your progress to a cookie in your browser.
2. Progress: automatically calculates in-game progress.
3. Buttons: forget about clicking a billion checkboxes just to catch up with your progress in-game.

Source: https://www.gta-sanandreas.com/guides/100percent/index.php