Open source alternatives to Oz

By GitHub stars it is Orca, with 124,398 stars and a commit on 14 Nov. Choose Orca when you want parallel agents on your own laptop or servers without spending Warp credits on every cloud run. Next come Omnigent (11,374 stars) and Jean (1,417 stars).

Yes. The code of all 3 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 Oz for. Choose Omnigent when you want Databricks' open layer to combine and control Claude Code and Codex, self-hosted under Apache 2.0. Choose Jean when agents should keep running on your own Linux server, with no platform fee on top of your agent plans.

2 of the 3: Orca and Jean. Each tool's page says what it needs to run.

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

Apache 2.0 (2), MIT (1). MIT, BSD and Apache let you change and reuse the code freely.

The hosting. Oz'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.