Jinwoo-H
c7320525eb
On a headless `orca serve` host every agent-created browser page is backed by
its own hidden BrowserWindow, i.e. its own renderer process, held in a map that
only ever shrank on an explicit `tab close` or process exit. Agents open pages
per measurement and rarely close them, so a long session accumulated renderers
until the host saturated: a reporter measured 9 tabs / 6 renderers at 220-480MB
each, the oldest at 1.3GB after 15h, load 6.85 on 4 cores. A hidden guest also
runs with background throttling disabled, so an animated page kept painting
where nothing could see it.
Reproduced on a real serve process (tests/e2e/headless-serve-browser-tab-reclaim
.spec.ts): 6 tabs -> 6 renderers, still 6 after 20s fully idle, and 2405 rAF
frames in ~25s on a window that is never shown.
Give the offscreen backend a lifecycle owner. It now keeps the page identity an
agent holds — id, address, worktree, profile — and treats the renderer as a
reclaimable resource. An idle page is parked (renderer destroyed, record kept)
and woken by the next command that targets it. Eviction mirrors terminal
hidden-view parking: a resident cap of 4 is the primary evictor, a 5 minute idle
window is the tail, and a page a client streams or that has a command in flight
is never parked. `tab list` keeps listing parked pages so an agent does not read
a reclaimed tab as gone and open yet another one.
Two related defects fall out of the same teardown path. The headless close path
never notified the agent-browser bridge, so every closed page left its helper
session, CDP proxy and listening port behind; park and close now both route
through the bridge before the mapping and the window go away. And because the
listing now spans resident and parked pages, `--index` resolves against that
same listing, so `tab close --index` can no longer address a different tab than
the one the caller read.
Parking discards in-page JavaScript state; cookies and local storage live in the
profile partition and survive. The thresholds are settable via
ORCA_HEADLESS_BROWSER_{RESIDENT_LIMIT,PARK_IDLE_MS,PARK_GRACE_MS,PARK_SWEEP_MS}.
Desktop is untouched — it has no offscreen backend.
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 0.0.43 · Install guide
Community & Support
-
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 7. If it is full, use 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.
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.