NeilandBrennan
bc319abfbe
Root-cause follow-up to #15559, which stopped a CPR overtaking a deferred colour reply but left the deferral itself in place. Orca answers terminal queries by writing to the PTY master, which a line discipline in ECHO copies straight back out as junk on a cooked prompt (#12112). The guard was to withhold the write until an `stty` subprocess proved ECHO clear — and forking is what forced the decision to be async. Any deferral, however short, lets a reply written later in the same turn overtake this one, so the async probe was the bug's root cause. Read the bit synchronously instead. Linux and the BSDs redirect a master's mode ioctls to the slave, so a `tcgetattr` on the master fd node-pty already owns answers for the slave with no fork: measured 0.26us against 2403us for the subprocess. With a verdict available inline, a querying program that already cleared ECHO — every raw-mode prober, including the colour probe behind the `gh auth login` report — is answered in its own turn and can never be reordered. The deferral stays for the genuinely cooked case, and the ordering guarantee stays underneath it: hosts whose node-pty predates this patch get no sync probe and fall back to the deferred path, which mixed client/host versions make a live production path. Reply routing is all-or-nothing: a payload needing neither containment nor ordering stays on the host's own path, so a CPR answered during shell startup cannot pass the daemon's post-ready flush gate and splice into the buffered startup command. Native side is fail-safe: a kernel that did not redirect would answer from the master's own termios, whose ECHO defaults set, so the degraded verdict is "echoing" — never a false "quiet". The JS half ships in the pnpm patch while the binding needs a source build, so ORCA_REQUIRE_NODE_PTY_ECHO_STATE=1 makes CI fail rather than silently skip when it is handed an upstream prebuild. Co-authored-by: Brennan <brennanb2025@users.noreply.github.com>
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
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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.