Open source alternatives to Amp

By GitHub stars it is OpenCode, with 226,673 stars and a commit on 13 Nov. Open source coding agent for 75+ model providers. Next come Grok Build (27,764 stars).

Yes. The code of all 2 is public under 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 Amp for. Choose Grok Build when you want a terminal coding agent whose source you can read and build yourself under Apache 2.0.

1 of the 2 we track had a commit in the last 30 days, among them OpenCode. The quietest is Grok Build, last changed on 29 Sep. A recent commit shows the project is kept up, not that it will stay that way.

MIT (1), Apache 2.0 (1). MIT, BSD and Apache let you change and reuse the code freely.

The hosting. Amp'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.