Merge Sim
bafc314bee
A descendant forked in the same wall-clock second as every walk that sees it was signalled with SIGTERM and then never escalated, so a SIGTERM-resistant child survived tab close, app quit and a full relaunch. Two children of one parent 96ms apart across a second boundary took opposite paths. The leak predates this branch: it reproduces with the change reverted. `ps lstart` has one-second resolution, so a walk landing inside a row's birth second can never rule out a pid recycled later in that same second. But a walk is not a match: a ppid walk only reaches what the root actually parents, and the root is pinned by Node's own handle, so a row the walk re-derived is ours whatever second it was born in -- a stranger would have to have been forked into our tree, and then it is not a stranger. Fence the escalation on that. Rows a merge retained from an earlier walk are not re-derived and still answer to the start-time fence, which remains correct for them. Scoped to callers that revalidate identity before signalling, which is the Claude close path. Codex teardown reaches this same verifier and is unchanged; the argument holds there too, but widening it is its own deliberate change. Also reverts two changes from the previous attempt at this leak. Advancing the capture boundary on a later walk is inert once the sweep fences on re-derivation -- both key on the same set of rows, so the new term short-circuits for exactly the rows whose boundary it advanced. The extra ladder refresh was a duplicate full process-table read: close() already awaits tree.refresh() immediately before proveClaudeChildExit, on the only path that reaches it. Known property: the kill lands roughly a grace window after the walk that proved membership, so a pid recycled inside that gap could in principle be signalled. It is bounded -- matchingSnapshotRows already requires the live row to carry the same start-second and pgid, so an impostor must be born in the remainder of that one second, land on that exact pid, and sit in the same process group, and it has already received the unfenced SIGTERM from the same loop.
Orca
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The AI Orchestrator for 100x builders.
Run Codex, ClaudeCode, OpenCode or Pi side-by-side — each in its own worktree, tracked in one place.
Download Orca
Features
Mobile CompanionMonitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere. |
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Parallel WorktreesFan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner. |
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Terminal SplitsGhostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts. |
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Design ModeClick any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt. |
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GitHub & Linear, NativeBrowse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch. |
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SSH WorktreesRun agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included. |
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Annotate AI DiffsDrop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca. |
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Drag Files to AgentsVS Code's editor with autosave everywhere — drag files or images straight into an agent prompt. |
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Orca CLIAgents drive Orca too — script every workflow with |
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Also in the box:
- Quick open — Search across worktrees, files, agents, commands, and repo context without leaving your flow.
- Account switcher & usage tracking — See Claude and Codex usage and rate-limit resets, and hot-swap accounts without re-logging in.
- Rich repo previews — Preview Markdown, images, PDFs, and repo docs in the workspace.
- Computer Use — Let agents operate desktop apps and visible UI when a workflow needs real interaction.
- Notifications and unread state — Know when an agent finishes or needs attention, then mark threads unread to come back later.
- And many, many more — we ship daily, so this list is perpetually behind. The changelog is the real feature list.
Supported Agents
Works with any CLI agent — if it runs in a terminal, it runs in Orca.
Claude Code
Codex
Grok
Cursor
GitHub Copilot
OpenCode
MiMo Code
Amp
OpenClaude
Antigravity
Pi
oh-my-pi
Hermes Agent
Devin
Goose
Auggie
Autohand Code
Charm
Cline
Codebuff
Command Code
Continue
Droid
Kilocode
Kimi
Kiro
Mistral Vibe
Qwen Code
Rovo Dev
+ any CLI agent
Install
Desktop — macOS, Windows, Linux
- Download from onOrca.dev
- Or grab a build directly: macOS Apple Silicon · macOS Intel · Windows (.exe) · Linux AppImage · All builds
- Running
orca serveon a headless Linux server? See the headless Linux server guide.
Or via a package manager:
# macOS (Homebrew)
brew install --cask stablyai/orca/orca
# Arch Linux (AUR) — or stably-orca-git to build from source
yay -S stably-orca-bin
Mobile Companion — iOS, Android
Pair with your desktop app to monitor and steer your agents from your phone.
- iOS: Download on the App Store or join TestFlight
- Android: Download APK 0.0.47 · Install guide
Community & Support
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Discord: Join the community on Discord.
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Twitter / X: Follow @orca_build for updates and announcements.
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WeChat: Scan to join the Orca community WeChat group 8.
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Feedback & Ideas: We ship fast. Missing something? Request a new feature.
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Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.
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Show Support: Star this repo to follow along with our daily ships.
Developing
Want to contribute or run locally? See our CONTRIBUTING.md guide.
The relay that pairs the mobile app with a desktop host is also in this repository under
cloud/, with a separate pnpm workspace and setup guide.
Signed Builds
Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.
License
Orca is free and open source under the MIT License.