A local browser tool for driving AI coding agent sessions.
- Branch anywhere — fork a side thread from any past message, dig in, and return to the main line without losing your place.
- Readable transcripts — a conversation viewer built for reading, far more comfortable than scrolling a terminal.
- All sessions side by side — browse, compare, and resume any past conversation at a glance.
- Multiple agents, one UI — run Claude Code and Codex sessions from the same workspace.
The name comes from a river delta: the way a conversation forks from its main channel into side branches.
Delta is alpha quality.
- Supported platforms: Linux and macOS.
- While it stays on
0.x, no compatibility is guaranteed — see docs/guides/compatibility.md for what that means for each surface.
Download the desktop app for your platform from the
latest Release — a .dmg
for macOS (Apple silicon only), a .deb for Linux —
open it, and start a session from the composer. The app needs tmux and an
authenticated claude and/or codex on the host. The builds are unsigned, so
macOS blocks the first launch:
docs/guides/install has the steps past that, the
Linux notes, and where the app keeps its data.
To work on Delta itself, run it from source:
git clone https://github.com/x7c1/delta.git
cd delta
make dev
make dev brings up the local development loop (backend + frontend), and
make help lists every other target.
- Prerequisites and the day-to-day workflow: docs/guides/development
- The browser↔server contract: docs/guides/api