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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. Admin CSS MU leads with 10K+ active installs, ahead of Mu Manager (1K+) and BEA (200+). All 5 plugins tagged “mu plugin” 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.
    Admin CSS MU

    The most installed mu plugin, with 10K+ active installs. Rated 4.5 from 26 reviews, last updated 1 year ago. Tested only up to WordPress 6.7.11.

  2. 2.
    Mu Manager

    1K+ active installs. Rated 5.0 from 7 reviews, updated 3 weeks ago.

  3. 3.
    BEA

    200+ active installs. No reviews yet, updated 5 months ago.

  4. 4.
    Disable Plugins

    10+ active installs. No reviews yet, last updated 12 years ago. Tested only up to WordPress 3.9.40.

  5. 5.
    Governance Guardrails

    Fewer than 10 active installs. No reviews yet, updated 4 months ago.

All 5 plugins tagged “mu plugin”