Open source alternatives to Any.do

By GitHub stars it is Super Productivity, with 23,662 stars and a commit on 13 Nov. Choose Super Productivity when you want a private to-do list that works offline on desktop, mobile and the web, with no sign-up. Next come Vikunja (6,042 stars) and Kanri (2,088 stars).

Yes. The code of all 3 is public under MIT, AGPL 3.0 or GPL 3.0 or later, so you can use them with no licence fee. Running one yourself costs the server and your time to look after it, and some makers also sell a hosted plan.

Start from the job you use Any.do for. Choose Kanri when you organise your own work on boards at a desktop and want it to run offline with the data kept private. Choose Vikunja when you want a to-do app on your own server, with Gantt and table views, CalDAV sync and no subscription.

All 3: Super Productivity, Vikunja and Kanri. Each tool's page says what it needs to run.

All 3 we track had a commit in the last 30 days, among them Super Productivity, Vikunja and Kanri. A recent commit shows the project is kept up, not that it will stay that way.

MIT (1), AGPL 3.0 (1), GPL 3.0 or later (1). MIT, BSD and Apache let you change and reuse the code freely. GPL and AGPL ask you to share your changes under the same licence when you give the software to others, and AGPL also counts letting people use it over a network.

The hosting. Any.do's maker runs the servers for you; with an open source tool the updates, backups, security fixes and support are yours, unless you take the maker's hosted plan. Features differ too, so check what each one imports and exports before you move your data.