Anti-DDoS-Lite (Anti-Crawler app) is a small PHP app to protect your site against DDoS attack.
Protect your website from bots with Prosopo Procaptcha
Unveil hidden messages within images using Minesweeper-inspired decoding. Left-click to reveal clues, right-click to flag suspected mines. Decode correctly to reveal parts of the image. No blind flagging! Also serves as human verification.
Reverse engineered Lemin Captcha.
Humangram is a social proof of humanity plugin for HUMAN protocol on Telegram.
js captcha generator (self-contained)
A JavaScript plug-in to authenticate users based on their perception and sketching capabilities of basic shapes like triangles, star etc.
Add a description, image, and links to the human-verification topic page so that developers can more easily learn about it.
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