Delta
Multiplayer workspace where developers and coding agents share live threads, with every code change permanently linked to the conversation that produced it.
Product Overview
What is Delta?
Delta is a standalone app from Zed Industries that reimagines how teams collaborate with coding agents. Instead of scattering prompts across chat windows and reviewing results through pull requests, Delta puts people and agents into a single shared 'thread' that combines the conversation with a live checkout of the repository. Underneath, Delta runs on DeltaDB, a new operation-based version control system that records every fine-grained edit as a stable 'delta' rather than waiting for a commit snapshot like Git does. Because each delta carries a permanent identity, comments and references stay anchored to the change itself and survive even as the surrounding code moves. Built on CRDTs, Delta lets multiple humans and agents edit the same worktree at once, from the desktop, the web, or a cloud runner, keeping code and reasoning in sync everywhere.
Key Features
Shared Agent Threads
A thread bundles the conversation with an agent and the repository checkout into one shareable unit, so teammates can invite others to review, comment, or work alongside the agent in real time.
Operation-Level History via DeltaDB
DeltaDB captures every editing operation between commits as a distinct delta with a stable identity, instead of relying solely on discrete Git snapshots.
Change-Anchored References
Comments and links attach to the delta that produced a change rather than a line number, so they remain valid even after the code is refactored or moved.
Concurrent Multi-Agent Editing
CRDT-based conflict-free replicated worktrees allow several people and agents to edit the same files simultaneously across different machines without merge conflicts.
Cross-Device Continuity
Threads can be opened from the desktop app or the web and moved to a cloud runner, with the conversation and code state staying synchronized throughout.
Git-Compatible Workflow
Delta is built to complement, not replace, existing Git and CI pipelines, handling the collaborative work that happens between commits.
Use Cases
- Agent-Directed Feature Work : Developers assign a coding task to an agent inside a thread, then review its reasoning steps and diffs without losing the context of why each change was made.
- Contextual Code Review : Reviewers comment directly on agent-generated code, with feedback permanently tied to the specific delta and conversation that produced it.
- Real-Time Team Debugging : Multiple engineers and agents join the same thread to investigate an issue together, seeing the same transcript and worktree simultaneously.
- Onboarding and Knowledge Transfer : New team members trace any line of code back to the original prompt and reasoning that generated it, speeding up ramp-up on unfamiliar codebases.
- Distributed Pair Programming : Remote teammates co-edit the same files from different locations, with changes replicated live via DeltaDB's CRDT engine.
FAQs
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