Best hashcash plugins for WordPress
The most popular hashcash plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Hashcash for Contact Form 7 leads with 30+ active installs, ahead of Hashcash (20+). All 2 plugins tagged “hashcash” 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 2 hashcash plugins
- 1.
Hashcash for Contact Form 7The most installed hashcash plugin, with 30+ active installs. Only 3 reviews so far, last updated 12 years ago. Tested only up to WordPress 3.7.41.
- 2.
Hashcash20+ active installs. Rated 5.0 from 5 reviews, last updated 8 years ago. Tested only up to WordPress 4.9.35.
All 2 plugins tagged “hashcash”
Hashcash for Contact Form 7
Down in the last 7 days:170#23,703by Abdussamad Abdurrazzaq13 years ago
Add Hashcash spam protection to Contact Form 7.
- Installs
- 30+
- Rating
- 5.0(3)
- Downloads
- 0/day
Hashcash
#28,609by pkaroukin8 years ago
Integrates Hashcash.IO proof-of-work widget with login/registration/comment forms.
- Installs
- 20+
- Rating
- 5.0(5)
- Downloads
- 0/day