ADE for working with a fleet of parallel agents
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Brennan Benson 40d0159926
fix(terminal): kill agent descendant processes on session teardown (STA-1800) (#8706)
* fix(terminal): kill agent descendant processes on session teardown (STA-1800)

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).

* fix(terminal): harden descendant teardown

* fix(terminal): require fresh process snapshots

* fix(terminal): close descendant teardown races

* refactor(terminal): preserve teardown line budget

* fix(terminal): keep descendant teardown fresh and identity-safe

* docs(reliability): record integrated descendant E2E

* fix(terminal): bound descendant teardown work

* fix(terminal): share descendant snapshot indexes

* docs(reliability): record descendant review evidence

* revert: remove speculative descendant hardening
2026-07-15 13:25:24 -07:00
.github fix(terminal): keep WebGL glyph atlas pages within the shader sampler budget (#8672) 2026-07-14 14:48:21 -07:00
.husky fix(win32): resolve EPERM on userData writes, batch-file spawn failures, and native dep rebuild (#1152) 2026-04-26 22:29:58 -07:00
Casks Put the orca CLI on PATH at install time for headless hosts (#5842) 2026-06-19 15:46:29 -07:00
build-plugins fix(daemon): daemon cannot start in 1.4.129-rc.1 — electron require leaked into daemon-entry chunk (#7844) 2026-07-08 19:41:09 -04:00
config fix(terminal): kill agent descendant processes on session teardown (STA-1800) (#8706) 2026-07-15 13:25:24 -07:00
docs fix(terminal): kill agent descendant processes on session teardown (STA-1800) (#8706) 2026-07-15 13:25:24 -07:00
mobile fix(mobile): dedupe host cards by pinned public key on re-pair (STA-1840) 2026-07-15 02:03:20 -07:00
native fix(cli): preserve multiline arguments on Windows (#8374) 2026-07-12 02:13:41 -07:00
notes Add version-matched skill guides to the CLI (#8624) 2026-07-14 02:17:55 -07:00
resources fix(cli): preserve multiline arguments on Windows (#8374) 2026-07-12 02:13:41 -07:00
skill-guides Add version-matched skill guides to the CLI (#8624) 2026-07-14 02:17:55 -07:00
skills Add version-matched skill guides to the CLI (#8624) 2026-07-14 02:17:55 -07:00
src fix(terminal): kill agent descendant processes on session teardown (STA-1800) (#8706) 2026-07-15 13:25:24 -07:00
tests fix(terminal): kill agent descendant processes on session teardown (STA-1800) (#8706) 2026-07-15 13:25:24 -07:00
tools Suppress Git Credential Manager OAuth popup loop in Orca-run git — clone, terminals/agents, setup hooks (fixes #7652) (#7986) 2026-07-14 15:23:06 -07:00
.gitattributes Add version-matched skill guides to the CLI (#8624) 2026-07-14 02:17:55 -07:00
.gitignore chore: drop local notes/ and pr-evidence/ from the tree (#8677) 2026-07-13 22:43:11 -07:00
.npmrc Update .npmrc 2026-07-11 20:53:20 -07:00
.oxfmtrc.json
.oxlintrc.json lint(unicorn): enable prefer-number-properties, prefer-array-find, prefer-array-index-of (#7516) 2026-07-05 23:56:37 -07:00
AGENTS.md Remove redundant line on PR evidence images 2026-07-12 01:38:02 -07:00
CLAUDE.md Link CLAUDE.md to AGENTS.md 2026-05-04 20:42:03 -07:00
LICENSE
README.md Update README.md 2026-07-15 01:23:26 -07:00
components.json
electron.vite.config.ts fix(runtime): prevent file watcher SIGSEGV from crashing orca serve (#8370) 2026-07-12 18:15:15 -07:00
orca.yaml Fix Windows setup hook script (#2106) 2026-05-16 17:44:42 -04:00
package.json release: v1.4.142-rc.7 2026-07-15 19:04:35 +00:00
pnpm-lock.yaml fix(terminal): keep WebGL glyph atlas pages within the shader sampler budget (#8672) 2026-07-14 14:48:21 -07:00
pty-exhaustion-agent-session-leak.md fix(terminal): retire sessions when tabs close (#8628) 2026-07-14 00:15:34 -07:00
tsconfig.json feat: Add SSH remote support (beta) (#590) 2026-04-13 19:23:09 -07:00
vite.web.config.ts chore(lint): upgrade oxlint to 1.71 + enable 7 new rules (autofixed backlog) (#6841) 2026-06-29 22:38:29 -07:00

README.md

Orca Orca

GitHub stars Total downloads across all releases License Join the Orca Discord Follow Orca on X Supported platforms: macOS, Windows, and Linux

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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

Orca desktop app running agents in parallel worktrees, with the Orca mobile companion app in the corner

Features

Mobile Companion

Monitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere.

iOS App Store · TestFlight · Android APK 0.0.31 · Docs →

Orca desktop with the mobile companion app

Parallel Worktrees

Fan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner.

Docs →

Parallel worktree orchestration

Terminal Splits

Ghostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts.

Docs →

Terminal splits

Design Mode

Click any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt.

Docs →

Embedded browser and Design Mode

GitHub & Linear, Native

Browse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch.

Docs →

GitHub and Linear task workflows in Orca

SSH Worktrees

Run agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included.

Docs →

Remote worktrees over SSH

Annotate AI Diffs

Drop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca.

Docs →

Annotate AI-generated diffs

Drag Files to Agents

VS Code's editor with autosave everywhere — drag files or images straight into an agent prompt.

Docs →

Drag files and images into an agent prompt

Orca CLI

Agents drive Orca too — script every workflow with orca worktree create, snapshot, click, and fill.

Docs →

Script Orca from the CLI

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 logo Claude Code   Codex logo Codex   Grok logo Grok   Cursor logo Cursor   GitHub Copilot logo GitHub Copilot   OpenCode logo OpenCode   MiMo Code logo MiMo Code   Amp logo Amp   OpenClaude logo OpenClaude   Antigravity logo Antigravity   Pi logo Pi   oh-my-pi logo oh-my-pi   Hermes Agent logo Hermes Agent   Devin logo Devin   Goose logo Goose   Auggie logo Auggie   Autohand Code logo Autohand Code   Charm logo Charm   Cline logo Cline   Codebuff logo Codebuff   Command Code logo Command Code   Continue logo Continue   Droid logo Droid   Kilocode logo Kilocode   Kimi logo Kimi   Kiro logo Kiro   Mistral Vibe logo Mistral Vibe   Qwen Code logo Qwen Code   Rovo Dev logo Rovo Dev   + any CLI agent


Install

Desktop — macOS, Windows, Linux

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.


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.

    WeChat QR code for the Orca community Backup WeChat QR code for the Orca community
  • Feedback & Ideas: We ship fast. Missing something? Request a new feature.

  • Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.

  • Show Support: Star this repo to follow along with our daily ships.


Developing

Want to contribute or run locally? See our CONTRIBUTING.md guide.

Orca contributors

GitHub star history chart for stablyai/orca

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.