Overview
Delta is a collaborative coding environment from Zed Industries, built on the premise that the conversation between you and an agent is the real source of your software. Every thread keeps the prompts, the reasoning, and the resulting code permanently linked, so reviewers see why a change was made instead of a bare diff. Share a thread link and teammates join as first-class participants who can comment, co-edit prompts, or take over the work without a commit or push. Underneath is DeltaDB, a CRDT-backed layer that records every edit operation between commits and syncs each participant a live local copy. Agents run in their own checkout on your machine, a teammate's, or a Delta cloud runner, then push to your local remote or open a pull request on origin. The same Rust app compiles to WebAssembly, so it also runs in the browser. Currently in private beta.
Pricing: Free with your own API keys | Zed Pro from $10/month for hosted models
Architecture: Apple Silicon, Intel
Key Features
- Shared threads where teammates and agents work side by side in real time
- DeltaDB records every edit between commits, not just snapshots
- Comments anchor to code and stay attached as the work evolves
- Review Changes tab aggregates branch diffs, uncommitted work, and commits
- Agents run in an isolated checkout on your machine, a teammate's, or a cloud runner
- Push to a local remote or open a pull request on origin with normal git
- Bring your own keys for Anthropic, OpenAI, Baseten, GitHub Copilot, or a ChatGPT subscription
- Same app on desktop and in the browser via WebAssembly
- Sessions stored in the system keychain, one sign-in per machine
- macOS and Linux today, Windows coming soon
