Software Alternatives, Accelerators & Startups

WhatRuns VS ContextForge.dev

Compare WhatRuns VS ContextForge.dev and see what are their differences

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WhatRuns logo WhatRuns

Extension that helps you identify technologies used on any website at the click of a button.

ContextForge.dev logo ContextForge.dev

Stop re-explaining your project to Claude every session. ContextForge adds persistent memory to Claude Code, Cursor, and Copilot via MCP. Free tier, 3-minute setup.
  • WhatRuns Landing page
    Landing page //
    2019-02-21
  • ContextForge.dev Space
    Space //
    2026-07-08
  • ContextForge.dev Home
    Home //
    2026-07-08

ContextForge is persistent, searchable memory for AI coding agents โ€” built on the Model Context Protocol (MCP).

Your AI assistant forgets everything when the session ends. ContextForge fixes that: save architectural decisions, naming conventions, and debugging context once, and any MCP client recalls it later with semantic search โ€” across sessions and across projects.

Works with: Claude Code, Claude Desktop, Cursor, GitHub Copilot, ChatGPT, and Windsurf.

WhatRuns

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ContextForge.dev

$ Details
freemium $9.0 / Monthly (Pro โ€” 15k queries/mo, 5 collaborators)
Platforms
SaaS Web Mac Windows Linux
Release Date
2026 July
Startup details
Country
United States
State
Texas
City
Tomball
Founder(s)
Alfredo Izquierdo

WhatRuns features and specs

  • Ease of Use
    WhatRuns offers a user-friendly interface that makes it straightforward for users to identify technologies used on websites without requiring technical knowledge.
  • Comprehensive Technology Detection
    The tool can detect a wide range of technologies including frameworks, analytics tools, WordPress plugins, and more, providing a thorough analysis of websites.
  • Browser Extension
    WhatRuns is available as a browser extension, making it easily accessible and convenient to use directly within your web browser.
  • Freemium Model
    The tool offers a basic free tier, allowing users to access essential features without any cost. There is also a premium option for more advanced features.
  • Regular Updates
    WhatRuns frequently updates its database and functionality, ensuring that users get accurate and up-to-date information.

Possible disadvantages of WhatRuns

  • Limited Free Version
    While the free version is useful, it has limitations in terms of the depth of information and the number of queries you can perform.
  • Privacy Concerns
    Since WhatRuns scans websites and collects data, there could be privacy concerns regarding what data is collected and how it is used.
  • Dependency on Browser
    As a browser extension, it requires installation and could be affected by browser updates or compatibility issues.
  • False Positives/Negatives
    There might be occasional inaccuracies in technology detection, leading to false positives or negatives, which can be misleading.
  • Limited Support
    Support for users, particularly those using the free version, is limited and may not always be responsive or comprehensive.

ContextForge.dev features and specs

  • Semantic Search
    Vector search (pgvector) โ€” recall by meaning, not keywords
  • Git Integration
    Auto-ingests commits and PRs as searchable knowledge
  • MCP-Native
    Works with Claude Code, Cursor, Copilot, ChatGPT, Windsurf
  • Task Tracking
    Work items your agent can read, create, and update
  • Snapshots
    Version and restore your entire knowledge base
  • Team Sharing
    Shared spaces and memory across your team

WhatRuns videos

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ContextForge.dev videos

How to Make Claude Run Automated Workflows (ContextForge Skills Tutorial)

More videos:

  • Tutorial - Schedule AI Prompts on a Cron with ContextForge Routines
  • Tutorial - Your AI Assistant Forgets Everything โ€” Here's the Fix MCP Memory

Category Popularity

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AI Tools
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Sales Automation
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Developer Tools
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Questions & Answers

As answered by people managing WhatRuns and ContextForge.dev.

What makes your product unique?

ContextForge.dev's answer:

ContextForge is memory that lives at the MCP layer, so it works across every AI coding agent at once โ€” Claude Code, Cursor, GitHub Copilot, ChatGPT, and Windsurf โ€” not just one. Save a decision once and any client recalls it later with semantic search. It goes beyond a note store: automatic git sync turns your commits and PRs into searchable knowledge, plus task tracking, snapshots, and team sharing โ€” all through a single MCP server you add with one command.

Why should a person choose your product over its competitors?

ContextForge.dev's answer:

Most memory tools are tied to a single agent or are just a key-value store. ContextForge is MCP-native, so it's portable across all your AI tools; it adds git sync so your codebase history becomes searchable context automatically; and it includes team features (shared spaces, collaborators) that solo-memory tools lack. Setup is one command, there's a genuine free-forever tier with no credit card, and paid plans start at just $9/month.

How would you describe the primary audience of your product?

ContextForge.dev's answer:

Software developers and engineering teams who use AI coding assistants โ€” Claude Code, Cursor, GitHub Copilot, ChatGPT, Windsurf โ€” and are tired of re-explaining their project, architecture, and conventions every session. It fits solo developers working across multiple projects as well as small teams that need shared, persistent context.

What's the story behind your product?

ContextForge.dev's answer:

ContextForge was born from a simple frustration: AI coding agents forget everything the moment a session ends. Every new conversation meant re-explaining the same architecture, naming conventions, and past decisions. ContextForge was built to give AI agents a permanent, searchable memory through the Model Context Protocol โ€” so knowledge is captured once and reused forever, across sessions and projects. It even dogfoods its own memory to help build itself.

Which are the primary technologies used for building your product?

ContextForge.dev's answer:

Next.js 16 (App Router), React and Tailwind CSS for the dashboard, hosted on Vercel. Supabase (PostgreSQL) with pgvector powers the semantic vector search, and Deno edge functions serve the API. Embeddings use OpenAI text-embedding-3-small. The MCP client is a Node.js package (contextforge-mcp) on npm, implementing the Model Context Protocol.

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Reviews

These are some of the external sources and on-site user reviews we've used to compare WhatRuns and ContextForge.dev

WhatRuns Reviews

15 Best BuiltWith Alternatives 2022
Compared to BuiltWith, WhatRuns is easier to use and shows a simple user interface with details you want to know about a site. It works exclusively as a browser extension that shows you specific technologies of a website open in the browser. You donโ€™t have to visit the WhatRuns website each time you want to collect data about a site.

ContextForge.dev Reviews

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What are some alternatives?

When comparing WhatRuns and ContextForge.dev, you can also consider the following products

Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.

Agentmemory - Persistent memory for Claude Code, Codex & coding agents

BuiltWith - Find out the technology behind websites

OpenMemory MCP - Your private, local memory layer for all AI tools

Similar Tech - SimilarTech offers a Sales Insights platform which helps companies uncover their ideal market by crawling the sourcecode of over 300M sites.

What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.