MurmellDeveloper Tools
Murmell
Claude Code, Codex, and Kimi, all on one shared canvas
What it is
Murmell is a browser-based cloud canvas where multiple AI coding agents, Claude Code, Codex, Kimi, and OpenCode, work on the same repository at once without overwriting each other. Each agent claims the files it's about to touch before writing, everyone on a shared link sees the same room in real time, and the work keeps running even after you close your laptop. It's built for developers or small teams running several coding agents in parallel who are tired of merge conflicts and agents dying when the lid closes.
- Price
- $39
- no free tier
- Free tier
- No
- no card required
- Platforms
- 2
- Web · CLI
What you get free vs paid
Verdict
Pros
- Real conflict prevention: agents claim file paths before writing, with a 15-minute default lease and instant release the moment an agent process dies
- Runs Claude Code, Codex, Kimi, and OpenCode on one shared repository, with Hermes coming next
- Anyone with the link can watch a live canvas for free, no account needed
- Bring your own agent subscriptions and API keys; Murmell doesn't resell tokens or store your keys
- Colliding writes get snapshotted before they land, so a losing agent's work is recoverable instead of lost
Cons
- No permanent free tier: paid plans start at $39/month after a 7-day trial
- Cloud-only, there's no self-hosted option if you want the infrastructure in-house
- File-level claims don't stop two agents from breaking the same contract from opposite ends, so the build can still fail
- Brand new, launched days ago, so long-term reliability is unproven
If your team already runs multiple coding agents on the same repo and merge chaos is the actual bottleneck, Murmell's file-claim system solves a real problem. Skip it if you're the only one touching the codebase.
Capabilities
Core features
- Shared cloud canvas: multiple agents and people work in one repository, in real time
- Path-level file claims with a 15-minute lease and instant release on agent death
- Snapshot commits taken before any colliding write, so overwritten work is recoverable
- Live preview pane for the running app inside the canvas
- Free, no-account link sharing to watch a canvas in progress
- One-command CLI to open the canvas from an existing project folder
AI stacks & blueprints
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Common questions
Is Murmell free?
Murmell is a paid tool without a permanent free tier, with paid plans starting around $39. Check QuestLoops for verified trials, student offers, and discounts.
How much does Murmell cost?
Murmell's paid plans start at about $39. Pricing changes over time — QuestLoops focuses on legitimate ways to reduce or avoid that cost.
What are the best alternatives to Murmell?
You can compare Murmell side-by-side with similar Developer Tools on QuestLoops to weigh free-tier limits, pricing, and tradeoffs before deciding.
Community workarounds
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