Publisher review:freeCap is a CAPTCHA script to stop spam on guestbooks. freeCap is a GPL CAPTCHA script to stop spam on guestbooks. It can be used to prevent spam on any form; comment areas, signups, shopping carts - any area of your website where you fear the evil spammers may target. freeCap PHP CAPTCHA boasts a host of features, not only does it offer strong character obfuscation, using random distortion of text and multiple backgrounds, but it also focuses on the security of the implementation. A lot of CAPTCHAs are relatively secure against OCR attacks, but fail to account for other attacks, such as session re-use. freeCap can output in three different image types, uses a custom GD font for each character, has brute force protection, it's open source GPL and is totally self-contained - no need for SQL databases, PEAR, or anything beyond PHP and GD!
Features:
-optional sha1 / md5 / crc32 hash in server session -3 different randomly generated background types: grid, squiggles, image blocks (or blank) -multiple font/colour support -htaccess protected dictionary, fonts and backgrounds -shared server security further enhanced -user definable text fading -automatic random number seeding for older PHP versions Requirements: · PHP 4.01+ · GDlib any version
freeCap 1.5 is a PHP script for Security Systems scripts design by pureMango.
It runs on following operating system: Windows / Linux / Mac OS / BSD / Solaris.
freeCap is a CAPTCHA script to stop spam on guestbooks.
Operating system:Windows / Linux / Mac OS / BSD / Solaris
freeCap 1.5 script details 
