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Best mu- plugins for WordPress

The most popular mu- plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MU Plugins Tool leads with 20+ active installs, ahead of DisableMU (10+) and MustUse Manager (Lite) (fewer than 10). All 5 plugins tagged “mu-plugins” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 5 mu- plugins

  1. 1.
    MU Plugins Tool

    The most installed mu- plugin, with 20+ active installs. Only 1 review so far, last updated 13 years ago. Tested only up to WordPress 3.5.2.

  2. 2.
    DisableMU

    10+ active installs. Only 1 review so far, last updated 10 years ago. Tested only up to WordPress 4.4.34.

  3. 3.
    MustUse Manager (Lite)

    Fewer than 10 active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.7.11.

  4. 4.
    CC-MU-Plugins-Loader

    Fewer than 10 active installs. No reviews yet, last updated 8 years ago. Tested only up to WordPress 4.9.35.

  5. 5.
    CC-Auto-Activate-Plugins

    Fewer than 10 active installs. Only 1 review so far, last updated 7 years ago. Tested only up to WordPress 5.1.28.

All 5 plugins tagged “mu-plugins”