FontCapture is a simple & free web application with an impressive function: it turns any handwriting into a font.
It does not require any software and works in few steps:
- download (PDF) & print a special template
- fill it with your handwriting
- scan & upload the template
The service automatically creates your font & presents you the download file.

Also, just before downloading the generated fonts, you can see a full-preview & decide to re-create a new one or not.
P.S. The service is currently in beta status.
Requirements: A printer & a scanner
Securimage is an free PHP captcha script used for protecting web forms from spam and abuse.
It can be easily installed and very well documented.
Different than the famous reCAPTCHA, which is web-based, Securimage is a downloadable solution that requires PHP and GD library to work.

Some feature of this captcha solution:
- Show an image in just 3 lines of code
- Validate submitted entries in less than 6 lines of code
- Customizable code length
- Choose the character set
- TTF font support
- Use custom GD fonts when TTF is not available
- Easily add background images
- Multi colored, angled, and transparent text options
- Arched lines through text
- Generates audible CAPTCHA files in wav format
- Use a word list for creating CAPTCHA codes
You can find a demo of the captcha here.
Requirements: PHP 4.3+, GD Library