Tasks–To Do Sync

Tasks–To Do Sync keeps Google Tasks and Microsoft To Do in two-way sync — titles, notes, due dates + times/reminders, completion, lists, subtasks, moves, and deletions, in both directions. It runs entirely in your own Google Apps Script project: no third-party sync server ever sees your task list. v1.0.0 stable, 549 automated tests passing, fail-closed design — uncertain writes halt instead of guessing, deletions are confirmed over two rounds, state is checksummed with restore. Windows users get a one-click installer; Mac/Linux use npx. MIT licensed. Specs: handles ~300 task pairs, syncs every 10 minutes, works with personal Microsoft accounts.