MarsX vs Windsurf

A side-by-side look at MarsX and Windsurf: ratings, pricing, features, pros and cons.

M MarsX

Start an app with no-code micro-apps and switch to code later

Free Free

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W Windsurf

Run and review local and cloud coding agents from one desktop app

Freemium $20/mo

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At a glance

Feature	MMarsX	WWindsurf
Pricing model	Free	Freemium
Pricing	Free	$20/mo
Free plan	Yes	No
Category	Code & Dev	Code & Dev
Platforms	Web, Windows, Linux	Mac, API, Slack
Best for	Indie makers launching SaaS products, Developers who want reusable full-stack blocks	Software developers, Engineering teams
Company	—	Cognition

MMarsX

Micro-apps: Reusable full-stack modules that include database, backend, frontend, admin and analytics.
No-Code Builder: Combine micro-apps visually to build products like an Uber-style marketplace.
Code mode: Switch to a JavaScript IDE to add custom logic or change the engine itself.
NFT Marketplace: A micro-app for selling NFTs with auctions, chat and fiat or crypto payments.
Peer-to-Peer Marketplace: A micro-app that connects buyers and vendors, such as clients and designers.

WWindsurf

Agent command center: Manage your agents and frontier models in one app using the Agent Client Protocol.
Local and cloud handoff: Start a session on your machine and continue it in Devin Cloud with the same context.
Subagent coordination: Devin splits long tasks among subagents, each opening its own pull requests.
Fast Context: Finds the files and lines an agent needs within a codebase in milliseconds.
Devin Review: Flags bugs and questionable code in changes before you merge.
Tab completions: Unlimited inline suggestions while you type, on every plan.

MMarsX

Not listed yet.

WWindsurf

MMarsX

Indie makers launching SaaS productsDevelopers who want reusable full-stack blocksNo-code builders who may outgrow no-code

WWindsurf

Software developersEngineering teamsTeams running many parallel coding tasks

MMarsX

+No dead end: You can move from no-code to code and keep your data and logic.
+Open source engine: The Mars engine is free under Apache 2.0 with no vendor lock.
+Self-hosting option: Run it on your own servers, a local machine or a closed network.
+Reusable building blocks: Micro-apps cover common products like marketplaces and social networks.

−No-code has limits: Fully custom features require the code interface.
−Third-party micro-apps: Some micro-apps are built by outside developers and may cost extra.
−Waitlist access: The homepage asks visitors to join a waitlist.

WWindsurf

+Free tier with unlimited Tab: The Free plan includes unlimited Tab completions and inline edits.
+Local and cloud in one place: Sessions move between your machine and Devin Cloud with the same context.
+Model choice: Pro unlocks frontier models from several providers plus the SWE-2 model.
+Built-in review: Devin Review points out bugs and risky code before you merge.

−Quotas apply: Paid plans include a usage allowance, and going past it is billed at API pricing.
−Cloud agents need a paid plan: Devin Cloud access starts with Pro.
−Team pricing adds up: Teams costs a base fee plus a monthly charge per full developer seat.

MarsX: Free. Windsurf: $20/mo. See each tool's plans above for what every tier includes.