Hidden panes are exempt from pendingData flow control (main gate-drops their bytes after ingestion), so N background agents ran unbounded ahead on the one shared daemon->main stream socket (measured 192MB user-space backlog) and visible-pane echo waited FIFO behind it — typing appeared seconds late whenever several agents burst on a loaded machine (8x512KB/s + 12 CPU spinners: p50 293ms fix-off; 12x1MB/s: 6.1s). Mechanism (replaces producer pacing — no reveal catch-up, ever): - Shallow socket write gate (128KB) + per-session fairness bypass bounds echo latency by construction; kernel-flush refill sentinel keeps held bulk draining at full speed (drain-only refill capped at ~8MB/s). - Backgrounded sessions' queued output is keep-tail dropped (newest 512KB kept, in-order dataGap replaces the middle); a ~2MB GLOBAL budget shrinks per-session keep-tails (floor 64KB) so a worktree switch never waits behind the aggregate. Reply-eliciting query bytes (DSR/DA/OSC probes) are salvaged from dropped spans. - Notifications are structurally lossless: the daemon runs the same shared scanners main uses (bell/OSC 133/pr-link/2031) over every byte BEFORE drop decisions and relays facts in byte order; ordered background markers hand scan authority back and forth, seeded with the emulator's partial escape tail so a sequence split across the handoff neither phantom-fires nor goes missing. Titles/agent-status stay main-side (kept-tail convergent). - Main: background = hidden AND no remote view subscriber (a live mobile/web view is never thinned); on dataGap main resets cross-chunk parse carries, drops the headless mobile mirror, and reuses the hidden-drop model-restore marker. Wire: three new stream events, tolerated within protocol v19 (old mains ignore unknown events; old daemons never see the trigger). Kill switches: ORCA_DAEMON_BACKGROUND_STREAM_DROP=0, ORCA_DAEMON_SHALLOW_SOCKET_GATE=0. A/B (pnpm bench:multi-workspace-typing): 8x512KB/s + 12 CPU workers p50 293ms/p90 647ms -> 15/21ms (= baseline); 12x1MB/s 6,146ms -> 20ms; light loads unchanged; zero missing echoes. Latin hidden-restore e2e green (probe-verified aggregate-drain root cause). New deterministic repro harness: tests/e2e/terminal-multi-workspace-typing-latency.spec.ts + CPU pressure workers. Co-authored-by: Orca <help@stably.ai>
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 0.0.22
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.
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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.










