Best o2 plugins for WordPress
The most popular o2 plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Post Deadlines leads with 10+ active installs. All 3 plugins tagged “O2” 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.
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Top 1 o2 plugins
- 1.
Post DeadlinesThe most installed o2 plugin, with 10+ active installs. Only 1 review so far, last updated 8 years ago. Tested only up to WordPress 4.9.35.