Securimage Alternatives
Securimage is described as 'script for generating complex images and CAPTCHA codes to protect forms from spam and abuse'. There are nine alternatives to Securimage, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, JavaScript, SaaS and PHP. The best alternative is reCAPTCHA, which is free. Other great sites and apps similar to Securimage are hCaptcha (Freemium), visualCaptcha (Free, Open Source), UniqPin (Free Personal) and GeeTest CAPTCHA (Paid).
- reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. View 14 alternatives to reCAPTCHA
- hCaptcha allows websites to make money serving this demand while blocking bots and other forms of abuse. View 14 alternatives to hCaptcha
- A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security. View 12 alternatives to visualCaptcha
Discontinued
As from Dec 26, 2016: Please note visualCaptcha is no longer actively developed. It still works and should continue to, but it won't be improved by the initial team anymore. ...
Source: https://github.com/emotionLoop/visualCaptcha/blob/master/README.md- Free • Open Source
- Self-Hosted
- UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it. View 11 alternatives to UniqPin
- GeeTest protects your websites, mobile apps and APIs from bad bot attacks with zero user friction. View 13 alternatives to GeeTest CAPTCHA
- Open-source implementation of server-side spam filtering of blog comments and forum posts. View 16 alternatives to Sblam!No screenshots yet
- Free • Open Source
- Linux
- Online
- Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. View 13 alternatives to Confident Captcha
- Open source reCAPTCHA alternative. View 8 alternatives to Captcheck
- A plugin to make the process of creating a negative captcha in Rails much less painful. View 11 alternatives to Negative Captcha