Lanap BotDetect ASP.NET CAPTCHA
Lanap BotDetect ASP. NET CAPTCHA is a website security solution designed to prevent automated registrations (spambot) with CAPTCHA image. While the code cannot be read by machine (computer program), it is easily read by a human. Key features: generates CAPTCHA image with textual code rendered in... 'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!
http://www.lanapsoft.com/products/...oad/lanapbotdetectaspnettrial.zip - 934Kb - Download - Screenshot

Lanap BotDetect ASP CAPTCHA
Lanap BotDetect ASP CAPTCHA is a website security solution designed to prevent automated registrations with CAPTCHA image. While the code cannot be read by machine (computer program), it is easily read by a human. Key features: generates CAPTCHA image with textual code rendered in it, fully... 'Developer Edition' includes FULL SOURCE CODE and ROYALTY FREE distribution rights!
http://www.lanapsoft.com/products/...wnload/lanapbotdetectasptrial.zip - 2Mb - Download - Screenshot

Friend Messenger
Friend Messenger allows you to promote yourself on MySpace and build up your friend list with a single click of a button. Sends 500 friend requests and 400 messages per day using a Captcha bypass. It has more search options than any other MySpace bot currently available, including options... Includes a Captcha (security image) bypass. ... Search any user's entire friend list. ... Find any user by searching for keywords in their profile! ... Keeps track of who you've messaged before, so you'll (optionally) never message the same person twice Import and export search results.
http://iwalton.com/FriendMessenger%20Setup.exe - 2Mb - Download - Screenshot

Human Pictcha
ZZEE Human Pictcha is a protection in a form of an image (a captcha), which can be embedded inside your web forms, and which will filter out various forum spam, guestbook spam, form spam, signup spam, password attacks, etc. It is a library and a set of tools and examples for PHP and can be used... Human Pictcha comes with the full open source, which is a big advantage. ... You can download a free demo version to see if it is compatible with your web site and how easy to use it in your forms. ... Human Pictcha is fairly easy to install and embed into your existing PHP or Perl forms.
http://www.zzee.com/human-pictcha/humanPictchaDemo.tar.gz - 49Kb - Download - Screenshot