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Alternatives to Firefox DevTools MCP

Firefox DevTools MCP is a MCP server by mozilla: Control and debug Firefox: navigate, fill forms, inspect network and console, profile. If it doesn't fit your setup, these 12 MCP servers cover similar ground. They are ordered by how closely they match Firefox DevTools MCP and by our rank, which weighs adoption, freshness and documentation; money never changes the order. mcp-debugger leads the list (most weekly downloads here (2.3K); active in the last 30 days). 3 of them are published by the company behind the product. 2 offer a remote endpoint, so there is nothing to install locally. Each entry shows data reasons to switch, and you can open a side-by-side comparison with Firefox DevTools MCP.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

You're replacing

Firefox DevTools MCP

Control and debug Firefox: navigate, fill forms, inspect network and console, profile.

12 alternatives

Ordered by how closely each matches Firefox DevTools MCP (shared product, category or stated alternative) and by rank.

  1. 1
    mcp-debugger

    debugmcp

    Step-through debugging for AI agents: breakpoints, stepping and live variables in nine languages

    • Most weekly downloads here (2.3K)
    • Active in the last 30 days

    ★ 179↓ 2.3K/wkLast active Oct 21, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2Compare →

  2. 2
    Chrome DevTools MCP

    ChromeDevTools

    MCP server for Chrome DevTools

    • More GitHub stars (54.1K)

    ★ 54.1KLast active Oct 23, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  3. 3
    .NET Debugger for MCP

    nevse

    Give an AI agent a real.NET debugger: breakpoints, stepping, locals, expression evaluation.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 9Last active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  4. 4
    STM32 GDB Debugger

    Zeraissh

    Debug STM32 firmware on real hardware via GDB + OpenOCD/ST-Link/J-Link with decoded results.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 2↓ 158/wkLast active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  5. 5
    Predictive Debugger

    SpeedosDK

    Predicts where JavaScript and TypeScript code will fail at runtime, for coding agents.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 2Last active Sep 27, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  6. 6
    ASP.NET Core Debugger — MCP Server for AI Agents

    magna-nz

    MCP server giving AI agents interactive.NET / ASP.NET Core debugging via netcoredbg + DAP.

    • Open source (MIT)

    ★ 15Last active Sep 14, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  7. 7
    UI Debugger MCP

    developerz-ai

    Autonomous UI debugging MCP server: an agent drives the browser/desktop, reports bugs + UX issues.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 2↓ 28/wkLast active Oct 23, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  8. 8
    OpenOCD Debugger

    microhenrio

    Debug microcontrollers via OpenOCD: flash, breakpoints, memory, registers and variables.

    • Open source (MIT)

    ★ 4↓ 68/wkLast active Jul 2, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  9. 9
    Measure

    measure.shOfficial

    Get to the root cause of mobile app crashes, errors & slow traces with Measure MCP

    • Remote server, no local install
    • Published by the vendor
    • More GitHub stars (1.4K)

    ★ 1.4KLast active Oct 21, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  10. 10
    Sentry MCP

    getsentryOfficial

    MCP server for Sentry - error monitoring, issue tracking, and debugging for AI assistants

    • Remote server, no local install
    • Published by the vendor

    ★ 944Last active Oct 22, 2026Local (stdio), Remote (HTTP)Claude Code, VS Code, Codex, Cursor +2

  11. 11
    Gemini Cloud Assist MCP

    GoogleCloudPlatformOfficial

    MCP Server for understanding, managing & troubleshooting your GCP environment.

    • Published by the vendor

    ★ 70↓ 59/wkLast active Oct 17, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  12. 12
    Ts MCP Debugger

    DigitalDefiance

    Enterprise debugging for Node.js/TypeScript with 25+ tools: breakpoints, profiling, hang detection

    ↓ 50/wkLast active Nov 30, 2025Local (stdio)Claude Code, Codex, VS Code, Cursor +2

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