Best join plugins for WordPress
The most popular join plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Invitations for Slack leads with 20+ active installs, ahead of Common Knowledge Join Flow (fewer than 10). All 2 plugins tagged “join” 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 join plugins
- 1.
Invitations for SlackThe most installed join plugin, with 20+ active installs. Rated 3.8 from 6 reviews, last updated 10 years ago. Tested only up to WordPress 4.4.34.
- 2.
Common Knowledge Join FlowFewer than 10 active installs. No reviews yet, updated 1 week ago.
All 2 plugins tagged “join”
Invitations for Slack
Up in the last 7 days:346#27,874by rheinardkorf10 years ago
Build a Slack community by allowing your visitors (or registered users) to invite themselves to your Slack team.
- Installs
- 20+
- Rating
- 3.8(6)
- Downloads
- 0/day
Common Knowledge Join Flow
Down in the last 7 days:24,358#74,063by commonknowledgecoop10 days ago
A form for users to sign up to a paid membership for your organisation, implemented as a WordPress block.
- Installs
- <10
- Rating
- –
- Downloads
- 26/day