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Murmell Review

Murmell is a browser canvas where multiple AI coding agents operate on a cloud machine, sharing a single project directory and providing real-time collaborative development.

shipped Aug 3, 2026agentsfreemium
agents
Murmell — product screenshot

Why it matters

1Murmell offers a freemium pricing model with a two-week free trial on any plan.
2The platform supports real-time, multiplayer coding collaboration between human users and AI agents.
3Murmell's Pro plan is priced at $69 per month, with Solo at $39/month and Builder at $149/month.
4It features a unique file reservation system to prevent overwrites when multiple AI agents work on the same repository.

About Murmell

Business Model
Subscription SaaS
Usage Pricing
$0 per agent
Free Credits
Two weeks free trial on any plan
Platforms
Web
Target Audience
Developers and teams using AI coding agents

Pricing Plans

Solo
$39/month
  • One project
  • One agent account
  • Runs in the cloud
  • Every provider, your own accounts
Pro
$69/month
  • Everything in Solo
  • Share a canvas
  • Five agent windows at once
  • Three projects
Builder
$149/month
  • Everything in Pro
  • Agent windows unlimited
  • Team canvases
  • Unlimited projects

Cost Examples

  • Solo Plan: $39/month
  • Pro Plan: $69/month
  • Builder Plan: $149/month

Specs

API Available

Yes, public API

overview

What is Murmell?

Murmell is a collaborative AI coding agent canvas tool that enables developers and teams to run and manage multiple AI coding agents in a single, shared repository. It provides a browser-based canvas where agents, such as Claude Code and Codex, operate within their own terminal windows on a cloud machine, facilitating real-time, multiplayer coding collaboration.

features

Key Features of Murmell

Murmell provides a robust set of features designed for collaborative AI-driven development, emphasizing agent management, security, and real-time interaction.

  • Shared Project Directory for Multiple Agents: Allows several AI coding agents (e.g., Claude Code, Codex) to work concurrently within a single, shared project directory.
  • File Reservation System: Implements a server-managed board where agents claim paths they intend to modify, preventing conflicts and overwrites by other agents until the file is released.
  • Cloud-based Terminals and Agents: Agents execute on cloud machines, not the user's local device, with each agent operating in its own real terminal window within the browser canvas.
  • Real-time Multiplayer Collaboration: Users can share links to their canvas, enabling others to observe terminal output and cursor movements in real-time, facilitating collaborative oversight.
  • Enhanced Security: Agents run in an isolated cloud sandbox where machines do not hold sensitive data like databases or decryption keys, limiting potential data exfiltration.
  • Persistent Sessions: Coding sessions and agent activities continue independently of the user's local machine or browser tab, preserving work even after disconnection.
  • GitHub Integration: Supports integration with GitHub for repository management and version control.
  • Workspace Isolation: Provides isolated workspaces for different projects, ensuring separation and security.

use cases

Who Should Use Murmell?

Murmell is designed for developers and teams engaged in projects that leverage multiple AI coding agents, requiring a collaborative, secure, and managed environment.

  • Developers working with AI agents: For running multiple AI coding agents (e.g., Claude Code, Codex) in a single project directory.
  • Teams collaborating on coding projects with AI: For facilitating real-time, multiplayer coding collaboration between human users and AI agents.
  • Project managers overseeing AI development: For managing file access and preventing overwrites when multiple agents work on the same repository.
  • Organizations requiring secure AI agent environments: For providing a secure cloud sandbox environment for AI agents, ensuring code safety and preventing data exfiltration.
  • Users needing persistent cloud development: For enabling persistent coding sessions in the cloud, independent of the user's local machine or browser tab.

how to use

How to Use Murmell

To begin using Murmell, users can sign up for an account and initiate a new canvas, which serves as the collaborative workspace for AI agents and human users.

  • 1Navigate to the Murmell website and create an account.
  • 2Start a new canvas to establish a cloud-based project directory.
  • 3Integrate a GitHub repository to populate the project directory.
  • 4Launch multiple AI coding agents within the canvas, each in its own terminal window.
  • 5Monitor agent activity and collaborate in real-time by sharing the canvas link with team members.
  • 6Utilize the file reservation system to manage concurrent modifications by agents and human users.

pricing

Murmell Pricing & Plans

Murmell operates on a freemium model, offering a two-week free trial for all plans. After the trial, users can subscribe to one of three monthly tiers, with read-only links remaining free and unlimited.

  • Solo: $39/month (monthly subscription)
  • Pro: $69/month (monthly subscription)
  • Builder: $149/month (monthly subscription)

Pros

  • +Enables multiple AI coding agents to work concurrently in a single, shared project directory.
  • +Features a unique file reservation system to prevent data overwrites and conflicts among agents.
  • +Provides a secure cloud sandbox environment for AI agents, enhancing code safety and preventing data exfiltration.
  • +Supports real-time, multiplayer collaboration, allowing teams to observe and manage AI agent activities.
  • +Offers persistent coding sessions in the cloud, independent of the user's local machine or browser status.
  • +Integrates with GitHub for streamlined repository management.

Cons

  • Requires a subscription after the initial two-week free trial for edit access.
  • Specific user reviews and reception data are not extensively detailed in public search results.
  • The platform's unique file reservation system may introduce a learning curve for new users accustomed to traditional version control workflows.
  • Reliance on cloud machines means performance can be subject to network latency and cloud provider resources.
  • While it supports GitHub, deeper integrations with other popular developer tools or IDEs are not explicitly detailed.

Similar Tools

Murmell vs Competitors

Murmell distinguishes itself from competitors primarily through its unique approach to managing multiple AI agents within a single, shared project directory and its explicit file reservation system.

1

Offers a complete, collaborative, browser-based development environment with integrated AI coding assistance (Ghostwriter).

Replit provides a very similar all-in-one browser-based coding experience with built-in AI assistance and real-time collaboration. While it doesn't explicitly feature 'multiple AI agents in separate windows' like Murmell, its environment is highly conducive to AI-driven development and collaborative work.

2
GitHub Codespaces

Provides a cloud-hosted, customizable development environment based on Visual Studio Code, accessible directly from your browser.

Codespaces offers the full VS Code experience in the browser with terminal access and collaboration via Live Share. It integrates well with GitHub and supports AI tools like Copilot, but the specific 'multiple AI agents' concept is less central than in Murmell.

3
Gitpod

Instantly spins up ready-to-code development environments in the cloud, integrated with your Git repositories.

Gitpod provides ephemeral, browser-based development environments with full terminal access and collaboration. It focuses on reproducible environments and integrates with VS Code, allowing for AI extensions, but doesn't natively feature Murmell's multi-agent canvas.

4

A collaborative online IDE primarily focused on web development, offering instant sandboxes for various frameworks.

CodeSandbox offers a highly collaborative, browser-based IDE with terminal access, similar to Murmell's canvas concept. While it excels in web development and collaboration, its direct integration of 'AI agents' is less prominent than Murmell's specific focus.

5

Allows you to run Visual Studio Code on a remote server and access it through your web browser, making it accessible from anywhere.

Coder provides a truly free and open-source way to get a browser-based VS Code experience with terminal access. The trade-off is that you need to self-host and manage the server, and while it supports VS Code extensions for AI and collaboration (Live Share), it doesn't offer Murmell's pre-configured multi-agent setup.

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