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altcha-org/altcha🔥 active
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.
TypeScriptMITupdated Nov 12, 2026
„... another popular solution to fight spam is Antispam Bee“ – Matt Mullenweg, Q&A WordCamp Europe 2014
$ git clone https://github.com/pluginkollektiv/antispam-bee.gitGDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.
Open-source GitHub repository abuse detection and response system.
🍯 Unobtrusive and flexible spam protection for Rails apps
Anti-spam bot for Telegram and general-purpose anti-spam library and server
Exchange Transport rules to detect and enable response to phishing
The modern spam protection. Protects your forms from spam by simply checking the content. Open source, Free to use, Accessible, and Self-Hosted.
Data from GitHub · snapshot Nov 13, 2026