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Best appendix plugins for WordPress

The most popular appendix plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. iThoughts Tooltip Glossary leads with 10+ active installs, ahead of Simple Glossary (10+). All 2 plugins tagged “appendix” 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 2 appendix plugins

  1. 1.
    iThoughts Tooltip Glossary

    The most installed appendix plugin, with 10+ active installs. Rated 4.5 from 13 reviews, last updated 8 years ago. Tested only up to WordPress 4.9.35.

  2. 2.
    Simple Glossary

    10+ active installs. Only 2 reviews so far, last updated 14 years ago. Tested only up to WordPress 3.3.2.

All 2 plugins tagged “appendix”