JS & CSS Compressor
By:Andrey Nikishaev
This class can be used to merge and compress several Javascript or CSS files.
It can take a list of Javascript or CSS files and compact them by stripping comments and white spaces putting all in one line.
The resulting code is stored in a given destination file.
Download:
http://www.ziddu.com/download/7490704/js_css_compressor-2008-09-24.zip.html

Css Shrink

By : João Romão
This class can be used to compress CSS files by removing unnecessary characters.
It takes the contents of a CSS file and compresses it by removing comments, white spaces and semi-colons after statements at the end of the line.
The compressed CSS output is returned as a string.
Download :
http://www.ziddu.com/download/7366570/cssshrink-2008-10-10.zip.html

css min

By : Joe Scylla
This class can be used to compact CSS style definitions.
It can take a string with CSS style definitions and removes all comments and whitespace that is not necessary.
Optionally it can preserve URLs in the style definitions.
Download:
http://www.ziddu.com/download/7366512/cssmin-2008-08-21.zip.html

CSS Compressor

By : Corey Hart
This class can be used to compact the size of CSS definitions.
It takes a string with CSS definitions and performs several types of operations that can reduce the number of bytes that the resulting CSS definitions take.
Download :
http://www.ziddu.com/download/7366496/css-compressor-2009-09-05.zip.html

crush Js Css
By: Antonio Jozzolino
This class can be used to optimized Javascript and CSS files.
It can compact and scrambles JavaScript files using Dean Edwards’ algorithm implemented by PHP class by Nicolas Martin.
The class can also compact and optimize CSS files using class CSSTidy.
Processed files can be compressed using gzip algorithm and stored in a cached [...]

By: Alexander Selifonov
This class can be used to implement CAPTCHA validation using colored boxes that the user must click which are validated using AJAX requests.
It renders a grid of boxes on which only one box is colored differently to indicate the user must click it.
The class sends an AJAX request to the server passing the [...]