Murmell: Collaborative AI Coding in a Shared Canvas

Overview

Murmell is a browser-based tool that lets developers use multiple AI coding agents at the same time within a single project. Instead of running these agents separately and dealing with messy merge conflicts later, Murmell puts them all in one shared workspace on a cloud server. This setup allows teams to watch changes happen in real time without needing to install anything on their own computers.

Benefits

Murmell offers several key advantages for modern development teams. First, it eliminates the headache of merge conflicts. By using a strict file-locking system, the tool ensures that only one agent can write to a specific file at a time. If two agents try to edit the same file, the system saves a snapshot of the work so no data is lost. Second, it provides full visibility. Users can see terminal outputs, cursor movements, and file edits as they happen. Third, it is secure and private. Your API keys and account credentials are encrypted and never stored on Murmell's servers. Each project runs on its own dedicated machine, keeping your work isolated from others.

Use Cases

Murmell is designed for teams that want to leverage multiple AI models simultaneously. For example, a team might use one agent to write backend code while another handles frontend updates, all visible in one window. It works well for real-time collaboration where multiple people drive their own agents within the same canvas. Developers can generate a simple link to share a running session with colleagues, allowing anyone with the link to observe the progress. This is useful for code reviews, brainstorming sessions, or complex tasks that require different AI perspectives working together on the same codebase.

Pricing

Murmell uses a subscription model with a one-week free trial on all plans. Billing is monthly or annually. The pricing structure is as follows:

• Solo Plan: Costs $39 per month. This plan includes one project, one agent account, and up to five agent windows running in the cloud.
• Pro Plan: Costs $69 per month. It includes all Solo features plus the ability to share canvases with anyone, up to ten agent windows, support for ten people editing at once, and three projects. It also includes $60 in Opus credits.
• Builder Plan: Costs $149 per month. This plan includes all Pro features plus twenty agent windows, support for twenty-five people editing, team-owned canvases, and up to one hundred projects. It also includes $60 in Opus credits.

It is important to note that Murmell charges for the machine and collaboration features, not for the AI model tokens used.

Vibes

Public reception highlights the efficiency of Murmell's approach. Users appreciate the ability to see exactly what each AI agent is doing without the confusion of hidden background processes. The real-time observation feature is particularly valued by team leads who want to monitor progress without interrupting the workflow. While some users note that the file-locking mechanism requires a slight adjustment in how they think about AI collaboration, most find the prevention of data loss and merge conflicts to be a significant improvement over traditional methods.

Additional Information

Murmell is a self-hosted service where the company manages the cloud machines for you. You cannot run your own servers for this product. The tool supports a variety of popular AI coding agents including Claude Code, Codex, Kimi, OpenCode, Hermes, Cursor, and Gemini. Installation is simple and can be done with a single command in any project folder. The system ensures that every project runs on its own disposable machine, while the actual code is safely pushed to a private GitHub repository for long-term storage.