Agent CLIs spawn tool children in detached process groups that PTY SIGHUP can never reach. Killing an agent session (tab close, retire, sleep) left those children running as orphans — eight orphaned git processes burned ~8 cores for up to 11.5h under the agents-running keep-awake and drained a battery to 8%. New pty-descendant-termination module: snapshot the ppid tree BEFORE signalling (a dead root's descendants reparent to pid 1 and become unfindable), SIGTERM the root group and every descendant, then after a 2s grace SIGKILL survivors gated on a pid+start-time identity re-check so a recycled pid is never signalled. Snapshot is bounded and never rejects; failures degrade to today's shell-only kill. Wired for agent sessions only (plain terminals keep nohup semantics) at all three POSIX kill sites: local provider shutdown, daemon TerminalHost immediate kill (the pty:kill path — force-kill bypassed Session.kill entirely), and daemon Session graceful kill. Verified live in the built app: an agent pane with a detached-pgid child; the child survived on the unwired build (three control runs) and dies within ~5s with the fix. Windows ConPTY and SSH-hosted PTYs keep the previous foreground-tree contract (documented follow-ups).
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
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 0.0.27
Community & Support
-
Discord: Join the community on Discord.
-
Twitter / X: Follow @orca_build for updates and announcements.
-
WeChat: Scan the QR code to join the community. If the first group is full, use the backup group.
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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.
License
Orca is free and open source under the MIT License.










