MCP Servers
5 open source tools compared. Sorted by stars. Scroll down for our analysis.
See our ranked picks: Best Open Source MCP Servers
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
| Tool | Stars | Velocity | Score |
|---|---|---|---|
 | 12.4k | +33/wk | 64 |
 docusaurusMCP This website is built using [Docusaurus](https://docusaurus.io/), a modern static website generator. | 9.6k | +31/wk | 78 |
 firecrawl-mcp-serverMCP Official Firecrawl MCP server for web scraping, search, and browser automation | 7.3k | +54/wk | 84 |
 | 5.6k | +5/wk | 58 |
 northcinderMCP Buyer-run, ad-neutral shopping-agent MCP software with deterministic ranking, signed purchase mandates, and a local audit trail. | 1.2k | +16/wk | 69 |
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Our Analysis
Connects your Chrome browser to AI assistants via MCP. Claude can take screenshots, fill forms, manage bookmarks, and search across your open tabs using a local vector database. Twenty-plus tools, all running locally. No data leaves your machine. Install the Chrome extension and the bridge package, configure your MCP client, and your AI can see what you see. Setup takes about 10 minutes. Maintained by hangwin (community). Free, MIT licensed, no API keys or subscriptions. If you want your AI assistant to actually interact with your browser, this is the one to install.
This is the documentation site for the AWS Labs MCP project, built with Docusaurus. It is not a connector to anything. It is a reference site for the other MCP servers in the suite. Completely free. No underlying service costs. AWS Labs maintains it alongside the rest of their MCP servers. Not something you install as an MCP server. It is documentation. The catch: this gets indexed as a "tool" because it lives in the monorepo, but it is just a docs site. No AI integration here.
Gives your AI assistant web scraping superpowers via Firecrawl's API. Scrape pages to clean markdown, run searches, automate browser interactions, and map entire sites. All through MCP tool calls. One npx command to install, but you need a Firecrawl API key. The service uses credit-based pricing, so costs scale with usage. Built-in credit warnings help prevent surprise bills. You can also point it at a self-hosted Firecrawl instance to avoid API costs entirely. Official Firecrawl team maintains this. Worth installing if web research is part of your AI workflow.
Playwright browser automation exposed as MCP tools. Your AI assistant can navigate pages, click elements, fill forms, take screenshots, and run JavaScript, all through natural language requests. Install via npm, browsers download automatically on first run. Supports 143 device presets for mobile testing. Can run as a standalone HTTP server or stdio. Setup is straightforward. Community maintained by ExecuteAutomation. Free, MIT licensed, runs entirely locally. No API keys, no subscriptions. If you need your AI to test web apps or scrape dynamic pages, this handles it cleanly.
NorthCinder is an MCP server that makes a shopping agent show its work. Give it a brief and it returns a ranked shortlist with machine-readable reasons, the offers it rejected and which requirement each one missed, and a store-by-store coverage report. Labeled sponsored offers rank below every organic result. Setup is one npx command and Node 20. It all runs locally: no account, no hosted control plane, no telemetry. Checkout requires a separate signed mandate that pins the exact offer, quantity, and spending cap. The catch is age. This went public in August 2026 with two commits from one author, so the neutrality rules are a specification, not something anyone has stress tested. Read the ranking source before you let it spend money.