Best serial number plugins for WordPress
The most popular serial number plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Serial Number for Contact Form 7 leads with 2K+ active installs, ahead of Serial Numbers (1K+). All 2 plugins tagged “serial number” 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 serial number plugins
- 1.
Serial Number for Contact Form 7The most installed serial number plugin, with 2K+ active installs. Only 1 review so far, last updated 3 years ago. Tested only up to WordPress 6.2.15.
- 2.
Serial Numbers1K+ active installs. Rated 4.7 from 78 reviews, updated 2 weeks ago.
All 2 plugins tagged “serial number”
Serial Number for Contact Form 7
Down in the last 7 days:8#4,532by Nobuntu3 years ago
Add-on for Contact Form 7 plugin. Add your own mail-tag to display the serial number.
- Installs
- 2K+
- Rating
- 5.0(1)
- Downloads
- 11/day
Serial Numbers
Down in the last 7 days:42#6,174by PluginEver19 days ago
An easy way to sell digital products and manage licenses with WooCommerce.
- Installs
- 1K+
- Rating
- 4.7(78)
- Downloads
- 50/day