Captcha

• Packages
  • phpcaptcha - Securimage is an open-source free PHP CAPTCHA script for generating complex images and CAPTCHA codes to protect forms from spam and abuse
  • Captcha
    • mewebstudio/captcha - Captcha for Laravel 4
    • simplecaptcha - Simplecaptcha is a package for laravel 4
    • Latrell/Captcha
      • Gregwar/Captcha - PHP Captcha library
    • reCAPTCHA
    • no-captcha - No CAPTCHA reCAPTCHA For Laravel
    • mohsen-shafiee/captcha - A simple captcha for laravel 4
  • Honeypot - Simple spam prevention package for Laravel applications
• JS Libraries
  • 10 Very Useful jQuery Captcha Plugins
• Tutorial
  • How to get the public and private keys for Google reCAPTCHA
  • Stackoverflow
    • Reload php image (captcha)
  • Youtube
    • PHP Tutorial: Refresh CAPTCHA image without refreshing the page with AJAX