Murmell

What is Murmell?

Murmell is a browser-based coding platform that lets developers and teams run multiple AI coding agents together in one shared workspace. Instead of each agent working in isolation, it creates a single cloud “canvas” where tools like Claude Code, Codex, and others collaborate on the same codebase in real time. Each agent runs in its own terminal while sharing the same project directory, with built-in coordination (like file claiming) to prevent conflicts or overwrites. Teams can join the same canvas, watch progress live, and even close their laptops while agents continue working in the cloud. Designed for modern AI-driven development, Murmell simplifies collaboration, reduces merge issues, and turns parallel agent workflows into a single, visible, and coordinated process.

Founded in 2026 by Moss'Ab Mirande-Ney, Murmell was built to solve the collaboration bottlenecks of multi-agent software engineering. Featuring an innovative file-claiming reservation system that prevents agents and human developers from overwriting each other's active work, alongside unified persistent cloud memory that continues running tasks even after you close your laptop, Murmell offers a 14-day free trial and subscription tiers starting from $39 per month.

• Founder / Leadership: Moss'Ab Mirande-Ney
• Launch Year: 2026

Use Cases:

• Running multiple specialized AI coding agents in parallel (e.g., one building API routes while another writes unit tests)
• Preventing race conditions and merge conflicts with intelligent file reservation locks while humans and agents code together
• Executing long-running refactoring or migration jobs in persistent cloud sandboxes without leaving your local computer running
• Reviewing live terminal outputs, shared code cursors, and running web previews with distributed team members
• Synchronizing completed multi-agent code branches and commits directly back to GitHub repositories

Technology:

• Cloud-native Linux sandbox environment hosting isolated project containers and high-speed terminal sessions
• Automated path-level file claiming protocol with crash detection and lock timeout recovery mechanisms
• Multi-agent orchestration runtime supporting Claude Code, OpenAI Codex, Kimi, OpenCode, and custom CLI developer agents

Target Users:

• Software engineers and technical founders using agentic CLI tools for full-stack feature development
• Agile development teams and engineering managers supervising parallel AI coding workflows
• DevOps and platform engineers seeking secure, isolated sandboxes for experimental autonomous agent runs
• Remote developer squads who need live multiplayer terminal sharing and visual workspace oversight

Acquisition: Operates as an independent developer tools and AI cloud infrastructure startup

Key features of Murmell

Murmell's key features are

• Multi-Agent Browser Canvas: Open multiple independent terminal windows running different AI coding agents inside a visual spatial workspace.
• Conflict-Free File Claiming: Agents and human developers reserve specific file paths before writing changes, preventing concurrent file overwrites and merge chaos.
• Persistent Cloud Execution: Coding agents continue executing tasks in dedicated cloud containers even when you close your browser or shut down your laptop.
• Unified Agent Memory & Session Freezing: Freeze your canvas state and return anytime to the exact same terminals, active file states, and conversational history.
• Real-Time Multiplayer Collaboration: Share canvas access with teammates to observe live terminal outputs, track collaborator cursors, and inspect code edits together.
• Integrated Live Previews: Spin up and preview front-end web applications and staging environments directly alongside active agent terminals.
• Multi-Provider Model Flexibility: Bring your own developer accounts across Anthropic Claude Code, OpenAI Codex, Kimi, and open-source models.
• Isolated Sandbox Security: Runs code in isolated environments that shield local machines and protect sensitive proprietary assets from unvetted package execution.

Murmell Pricing

Murmell operates on a subscription model structured around active project counts and simultaneous agent windows, backed by a 14-day free trial on all plans.

Solo Plan:

• $19.5 / month
• 1 active project and 1 agent account running in the cloud
• Bring your own provider accounts (Claude Code, Codex, Kimi) with persistent background execution

Pro Plan (Most Popular):

• $34.5.00 / month
• Up to 3 active projects and 5 simultaneous agent windows
• Real-time canvas sharing, multiplayer collaboration, and live preview rendering

Builder Plan:

• $74.5 / month
• Unlimited active projects and unlimited simultaneous agent windows
• Shared team canvases, priority cloud compute allocation, and advanced workspace permissions

Disclaimer: For the latest agent provider integrations, enterprise self-hosting setups, and team seat discounts, please visit the official Murmell website at murmell.com.

Who is using Murmell?

Murmell is used by engineering teams and modern developers, including

• Full-Stack Product Developers: Assigning tedious backend boilerplate and frontend styling to separate agents simultaneously
• Engineering Team Leads: Supervising multiple agent outputs in a single collaborative room without merge conflicts
• Startup Founders & Indie Hackers: Multiplying engineering output by orchestrating parallel autonomous coding agents around the clock
• Remote Pair Programmers: Reviewing code, terminal commands, and live previews with colleagues on a unified interactive canvas

Best Murmell Alternatives

Some of the strongest Murmell alternatives include

• Replit Agent
• Cursor
• Google Antigravity
• CodeSandbox
• Kilo Code
• Coder (code-server)

Pros and Cons of Murmell

Pros

• Solves multi-agent merge conflicts with an automated, path-level file reservation system
• Persistent cloud sandbox lets agents continue long coding tasks even after closing your laptop
• Supports top-tier agent frameworks including Claude Code, OpenAI Codex, Kimi, and OpenCode
• Multiplayer canvas provides shared cursors, live terminal watching, and integrated web previews
• Keeps your local development environment uncluttered and secure from unvetted AI scripts

Cons

• Requires users to connect their own third-party AI provider accounts and API credits
• File reservation protocol requires a short adjustment period for developers used to traditional branch merging
• Cloud-hosted terminals depend on stable internet connectivity for real-time responsiveness

Why Choose Murmell?

While single-user AI code editors only let you run one prompt at a time on your local machine, Murmell creates an entire digital office where you, your teammates, and multiple AI agents work together seamlessly.

• Multiplies development speed by running parallel agents on separate parts of the codebase
• Eliminates overwrites with automatic file locks and intelligent timeout recovery
• Persists state and terminal sessions in the cloud without draining local computer battery
• Brings multiplayer Google Docs-style collaboration to agentic terminal development

Murmell vs. Competitors

The main difference between Murmell, Cursor, Replit Agent, and CodeSandbox lies in multi-agent orchestration and concurrency safeguards. While Cursor is a local VS Code fork for single-developer inline coding, and Replit provides a cloud IDE with an autonomous assistant, Murmell is built specifically around parallel multi-agent collaboration—combining multi-terminal canvas layouts, persistent cloud execution, and automated file-claiming locks.

How do we rate Murmell?

Murmell Review

Murmell provides a necessary and brilliantly engineered solution for the emerging era of agentic software development. By addressing the core friction point of multi-agent coding—where concurrent autonomous agents inevitably collide, overwrite files, and cause merge conflicts—Murmell's visual canvas and file-claiming locks bring order to chaotic terminal workflows. Its persistent cloud sandboxes and live multiplayer terminal sharing make it an indispensable platform for developers and engineering teams looking to supercharge their coding velocity with autonomous agents.

Conclusion

Murmell is a new kind of developer platform built for teams using multiple AI coding agents at once. Instead of running agents separately, it provides a shared cloud canvas where developers and AI agents work together on the same codebase in real time—like “Google Docs for AI development.” Its biggest strength lies in multi-agent coordination. Features like live terminals, shared workspace, and file-level locking prevent agents from overwriting each other and eliminate messy merge conflicts. Combined with cloud execution, agents keep running even when you close your laptop, making workflows faster and more continuous. While it’s still an early-stage product and requires bringing your own AI tools and setup, the concept is powerful. Murmell represents the future of collaborative development—where humans and multiple AI agents build software together in one synchronized environment.