Captcheck
Open source reCAPTCHA alternative
Captcheck is an open-source CAPTCHA service that can be used as a drop-in replacement for reCAPTCHA. It includes a JavaScript widget for the client side and a PHP API for server-side verification. The project is licensed under the MIT License and can be self-hosted.
12 alternatives to Captcheck
Ranked by how well each tool replaces Captcheck: shared features, audience, price and popularity.
Spam protection for websites using machine learning filters on user-submitted text
Covers 1 of 8 key features.
Free plan59 out of 100 matchContact sales- 56 out of 100 match$3.46/mo
A secure web application for building and managing online surveys and databases.
Covers 0 of 8 key features.
Free plan53 out of 100 matchFreeDraw raffle winners with verifiable certificates. Free plan available. Since 2009.
Covers 1 of 8 key features.
Free plan53 out of 100 match$10.75/moThe modern spam protection system for forms. It replaces other captcha methods with a spam
Covers 3 of 8 key features.
Free planOpen source52 out of 100 matchFreeCrowdsource your Micro Jobs to more than 4,952,789 Workers worldwide, Completing 218,381,6
Covers 1 of 8 key features.
Free plan52 out of 100 matchFreeProfessional online exam maker — create tests easily.
Covers 1 of 8 key features.
Free plan51 out of 100 matchContact sales- 50 out of 100 matchFree
Anonymous data collection tool for longitudinal studies with participants.
Covers 3 of 8 key features.
Free planOpen source50 out of 100 matchFreeCollect high-quality data from real people for AI development and research
Covers 1 of 8 key features.
49 out of 100 matchUsage-based- 49 out of 100 matchFree
Online survey software for creating, distributing and analyzing surveys
Covers 1 of 8 key features.
Free plan49 out of 100 match$83/mo