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Served straight from g-rump.com. Free, open source, and yours — no account, no telemetry, bring your own key.

G-Rump 2.0.012.4 MB

macOS 14 or later · Apple silicon & Intel · Free, MIT licensed

Download for macOS
SHA-256f6ba9c194a07f490018e15c8e86db81d19dc13ab0d551c3c877ab22760e7f61c

Install

  1. 1
    Unzip G-Rump-2.0.0.zip.
  2. 2
    Drag G-Rump.app into Applications.
  3. 3
    Clear the one-time Gatekeeper quarantine (current builds are ad-hoc signed):
    xattr -dr com.apple.quarantine /Applications/G-Rump.app
  4. 4
    Launch G-Rump and paste an API key from any supported provider. Keys live in the Keychain only.

Verify the download

Compare against the checksum shown above:

shasum -a 256 ~/Downloads/G-Rump-2.0.0.zip

Build from source

Prefer to compile it yourself? Xcode 16.2+ and two commands:

git clone https://github.com/Aphrodine-wq/G-Rump.git
cd G-Rump && make run

See Distribution for packaging, signing, and notarization.

Version history

v2.0.0Current — multi-provider release. Hosted here and on GitHub.
v1.0Pre-release (Qwen-era) — available on GitHub only.

Full details in the changelog, every artifact on GitHub Releases.

Questions

Why the quarantine step?
Current builds are ad-hoc signed rather than notarized with an Apple Developer ID, so Gatekeeper quarantines the app on first launch. The xattr command clears that flag once. You can read exactly what ships in the app — the source is public, and the SHA-256 checksum above lets you verify the download byte-for-byte.
What does it cost?
Nothing. G-Rump is free and MIT-licensed. You bring your own API key from Anthropic, OpenAI, Google, or OpenRouter, and pay that provider directly for what you use. There is no account, no subscription, and no backend.
Where do my API keys live?
In the macOS Keychain, and nowhere else. Keys never touch UserDefaults, config files, or disk, and the app talks to your provider directly. See the security model for the full picture.
Apple silicon or Intel?
Both — the release build is a universal binary. macOS 14 or later is the only hard requirement.