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Best custom design plugins for WordPress

The most popular custom design plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Modular Custom CSS leads with 400+ active installs, ahead of Multisite Custom CSS (100+) and Reaktiv CSS Builder (80+). All 4 plugins tagged “Custom Design” 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 4 custom design plugins

  1. 1.
    Modular Custom CSS

    The most installed custom design plugin, with 400+ active installs. Rated 5.0 from 6 reviews, updated 3 months ago.

  2. 2.
    Multisite Custom CSS

    100+ active installs. Rated 5.0 from 8 reviews, updated 3 months ago.

  3. 3.
    Reaktiv CSS Builder

    80+ active installs. Only 4 reviews so far, last updated 11 years ago. Tested only up to WordPress 4.2.39.

  4. 4.
    POFW Option CSS

    10+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 6.4.14.

All 4 plugins tagged “Custom Design”