Open source alternatives to Coda

By GitHub stars it is AppFlowy, with 78,875 stars and a commit on 2 Nov. Choose AppFlowy when you want to host it yourself and keep your data on your own server. Next come Docmost (22,333 stars) and La Suite Docs (16,989 stars).

Yes. The code of all 4 is public under AGPL 3.0, MIT or Apache 2.0, 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 Coda for. Choose Colanode when you want pages and databases with table, kanban and calendar views under the Apache 2.0 licence, self-hosted. Choose Docmost when you need shared team pages with comments, page history and public links, free on the self-hosted Community edition.

All 4: AppFlowy, Docmost, La Suite Docs and Colanode. Each tool's page says what it needs to run.

3 of the 4 we track had a commit in the last 30 days, among them AppFlowy, Docmost and La Suite Docs. The quietest is Colanode, last changed on 3 Apr. A recent commit shows the project is kept up, not that it will stay that way.

AGPL 3.0 (2), MIT (1), Apache 2.0 (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. Coda'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.