Snaptcha
Snaptcha (Simple Non-obtrusive Automated Public Turing test to tell Computers and Humans Apart) is an invisible captcha and will be the last time you will ever have to think about protecting your forms from spam bots.
Snaptcha will automatically add a hidden field to your Comment forms, Safecracker forms, Freeform forms, Member Registration forms and Forum Submission forms and will validate it on submission. If it determines that a spambot is attempting to submit the form then it will prevent the form from being submitted and will output an error message. You can control the level of security as well as the error message text.
Comparison with Honeypot
The Honeypot captcha method is similar to Snaptcha's low security level. It simply adds a hidden input field to the form and "hopes" that spam bots will enter a value into it, thereby giving them away as bots. Snaptcha's medium and high security levels are far more secure than Honeypot, requiring javascript and the latter only allowing single form submissions. This means that the vast majority of spam bots will be blocked.
Reviews
Reviews taken from devot-ee
