#1
Accessible, rule-based spam protection for web forms that inspects form fields, stores minimal data encrypted, and auto-deletes entries after 14 days.
305 stars17 forksMITlast commit Actively maintained
2 self-hosted Private Captcha alternatives
Privacy-focused CAPTCHA service that protects websites and forms from automated bots and abuse by providing anti-spam verification challenges and bot detection while minimizing user tracking and telemetry; integrates into web pages and server workflows.
Alternatives to Private Captcha
Privacy-first, GDPR-focused self-hosted Proof-of-Work CAPTCHA for forms and APIs with an adaptive lightweight widget and Postgres/ClickHouse backend.
187 stars7 forkslast commit Actively maintained
What replacing Private Captcha actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in Moderation & Anti-Spam Tools.
