PromptBranch is a local-first workspace for prompts that need to improve over time. Version every change, compare real model runs, and keep the reasoning behind what works.
Website · Documentation · Releases
- Branch ideas without losing the path that got you there.
- Compare versions, outputs, latency, cost, and evaluations with evidence.
- Stay local-first with a library you control, plus optional peer-to-peer sync.
- Sync devices directly over your local network—no account or central prompt database.
- Share prompts as immutable, unlisted snapshots through the PromptBranch portal.
Agents can suggest improvements. People approve them.
PromptBranch is open source under the MIT License. Explore the project or contribute.
