Alternatives to Securimage for all platforms with any license

Platforms

Desktop

Web / Online

Development

  • reCAPTCHA icon

    reCAPTCHA

    reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human time are...

    Free Web / Cloud

  • visualCaptcha icon

    visualCaptcha

    A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security.

    Open Source Self-Hosted GitHub

  • UniqPin icon

    UniqPin

    UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it. Surpassing a CAPTCHA solution UniqPin make human identification comfortable to user...

    Free Personal Self-Hosted JavaScript PHP

  • Keypic icon

    Keypic

    Keypic provides a series of Web Security solutions 1) Protection from web-spam without CAPTCHA Keypic helps boost site conversions & user loyalty • Prevent Comment Spam in blogs and forums. • Protect Online Polls. •...

    Freemium Web / Cloud

  • PlayThru icon

    PlayThru

    The PlayThru is the next generation of online human verification. It is designed to be more simple, more intuitive, and more fun than the current CAPTCHA options. We use game mechanics to create an experience that is more enjoyable...

    Free Web / Cloud

  • Sblam! icon

    Sblam!

    Open-source implementation of server-side spam filtering of blog comments and forum posts. It's available as a free web service. It's open source, so you can set up your own server if you prefer. It's transparent to...

    Open Source Linux Web / Cloud

  • Confident Captcha icon

    Confident Captcha

    Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security software today.

    Freemium Web / Cloud

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