Install ProPR, or skip the server
Run npm install -g propr-cli and propr setup on a Linux Docker host (quickstart). ProPR Hosted runs a dedicated instance for you when you would rather not run one.
ProPR: the shared-server alternative to Orca's worktrees
Orca runs CLI agents side by side in isolated local or remote worktrees, with terminal, preview, and diff-review tools. ProPR makes the pull request the unit of work and runs the worktrees on your server.
vs
Orca
One developer or the whole group
Orca gives one developer an agent-first worktree environment. ProPR gives the engineering group a shared, self-hosted path for shipping changes through GitHub.
Orca pathWorktree IDE → parallel CLI agents → inline diff review → PR draftYou hand PR comments back to an agent inside Orca.
ProPR pathPlan → isolated workspace → GitHub PR → follow-up commitMaintainers who never open Orca see the plan, the pull request, and the logs.
Switch from Orca to ProPR.
What you keep: your GitHub repositories and review process, and the Claude Code, Codex, Gemini, and OpenCode logins Orca already used.
The same ideas, ProPR's names
| Orca | ProPR |
|---|---|
| Worktree | Task, with its own isolated workspace |
| GitHub task list in the app | AI label on the GitHub issue |
| Inline diff review | Pull request review in GitHub; /review by a second model |
| Handing PR comments to an agent | Any plain PR comment, unattended |
| SSH worktrees and cloud VMs | Your own server, or ProPR Hosted |
From zero to the first pull request
Add the same repository and sign in your agent
Open the web UI, sign in with GitHub, and add the repository. Sign in Claude Code, Codex, Antigravity CLI, and OpenCode; each shows its health and default model.
Start the first task and approve the plan
Add the AI label to an issue, or start several from Planner Studio; each runs in its own workspace on the server.
Review the pull request in GitHub
Review the diff the way you review any pull request. A plain comment on it becomes the next commit on the same branch; /review posts scored findings and /fix applies them. The switch-and-revert playbook hands a stuck PR to another model.
What stays with Orca: Orca is a desktop environment with a terminal, editor, and browser around every agent; ProPR runs the agents unattended and shows the live log, the diff, and the pull request.
Orca, built by Stably AI under the MIT license, puts Claude Code, Codex, Gemini, OpenCode, Cursor, Copilot, and any other CLI agent side by side in isolated worktrees. Its terminal, editor, browser, and inline diff annotations keep agent work in one environment, it drafts commit messages and pull requests from the diff, and it lets you hand failing checks or PR review comments back to an agent. It runs on macOS, Windows, and Linux, with SSH worktrees and cloud VMs for remote execution and GitHub and Linear task lists inside the app.
ProPR runs the worktrees on your server and makes the pull request the unit of work. It is open source (Apache 2.0): each task starts from a reviewed plan, ProPR opens the PR, and review comments continue the change with nobody at a keyboard.
Orca fits best when...
- You want a worktree IDE as home for local or SSH-hosted agent sessions.
- You want to watch and steer several CLI agents in parallel and review their diffs yourself.
- Inline diff annotation and integrated GitHub and Linear task lists cover the review you need.
ProPR fits best when...
- Review happens in GitHub, where maintainers who never open Orca see the plan, the PR, and the logs.
- ProPR opens the pull request itself, after a reviewed plan, and comment-driven follow-ups run unattended.
- The same path runs Claude Code, Codex, OpenCode, Antigravity CLI, and Mistral Vibe.
A worktree IDE versus a shared PR queue.
| Question | Orca | ProPR |
|---|---|---|
| License | MIT | Apache 2.0 |
| Desktop development environment | Yes: macOS, Windows, Linux | Desktop client for Linux and macOS; agents run on your server |
| Parallel git worktrees | Yes | Yes |
| Plan, branch, PR, comments, and logs live in a shared product UI | No | Yes |
| PR comments handed to an agent | You hand PR comments to an agent inside Orca | Any plain comment, unattended |
| Team-wide infrastructure | No | Yes |
Verified November 2026: Orca repository, stably.ai.