Attribution (findings log 2026-07-03): main's onPtyData consumed ~93% of the event loop under an agent-TUI flood, and the dominant term was appendNormalizedToMultilineTailBuffer + finalizeRetainedTerminalRows materializing ~2x tail-length row objects plus a per-row trailing-space regex on every chunk — 0.888ms/chunk at the 2,000-line cap, on every Claude-Code-shaped frame (cursor-up + erase-below). The multiline algorithm now runs on a suffix window sized by the chunk's maximum upward cursor excursion (plus the inherited redraw cursor and a safety margin); the untouched prefix is shared by reference with a cheap last-char trailing-space check to match the reference trim. Pathological full-height cursor-ups fall back to the unwindowed implementation, which is kept verbatim and exported as the reference for the 500-case differential fuzz (retained-tail-redraw-window.equivalence.test.ts). Micro-bench at a full 2,000-line tail: 0.888 -> 0.073 ms/chunk (12x). 1,415 runtime tests green, typecheck clean. Co-authored-by: Orca <help@stably.ai>
Orca
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 0.0.21
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 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.









