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WhatCMS

Tool for detecting which CMS and web technologies a site uses.

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WhatCMS.org analyzes a fetched webpage for thousands of artifacts — such as generator meta tags, common image paths, custom headers and session names — to determine which content management system and other web technologies power it. Detection is performed per page rather than per domain. The service also covers hosting provider detection (Who-Hosts-This.com), WordPress theme detection (ThemeDetect.com) and Shopify theme detection (Shopify-Themes.com). A single API subscription covers all three detection services.

12 alternatives to WhatCMS

Ranked by how well each tool replaces WhatCMS: shared features, audience, price and popularity.

  1. Craft CMS

    Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web.

    Covers 0 of 11 key features and is open source.

    Free planOpen source
    56 out of 100 matchContact sales

  2. CMS Made Simple

    Open Source Content Management System

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    55 out of 100 matchContact sales

  3. Drupal

    The Web's Most Powerful Open Source CMS

    Covers 0 of 11 key features and is open source.

    Free planOpen source
    55 out of 100 matchFree

  4. Backdrop CMS

    Simple, lightweight CMS for attractive websites.

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    54 out of 100 matchContact sales

  5. WonderCMS

    The smallest flat file CMS

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    53 out of 100 matchContact sales

  6. Winter CMS

    Free, open-source content management framework built on the Laravel PHP framework

    Covers 1 of 11 key features and is open source.

    Open source
    50 out of 100 match—

  7. Interactive Tools (interactivetools.com)

    Private-label content management software and programming services for web agencies.

    Covers 1 of 11 key features.

    50 out of 100 match—

  8. Kontent.ai

    Headless CMS with AI agents for content operations

    Covers 1 of 11 key features.

    49 out of 100 matchContact sales

  9. Pushword

    An open-source CMS built on modern PHP with optional Rust acceleration and flat-file mode.

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    49 out of 100 matchContact sales

  10. Invenio

    Powering Open Science

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    48 out of 100 matchFree

  11. Magnolia

    Agentic digital experience platform that brings content, channels, governed AI and systems

    Covers 1 of 11 key features.

    47 out of 100 match—

  12. ComPDF

    Developer-oriented document processing SDKs and cloud APIs for PDF viewing, editing, PDF/A

    Covers 1 of 11 key features and is open source.

    Free planOpen source
    47 out of 100 match$20/mo