The Bakery Everything CakePHP

This component makes it easy to filter data by a belongsTo association. Allows you to display pagination results narrowed by the foreignKey used in the association. The foreignKey can persist when creating new records, and makes it easier to navigate around tables.

AJAX Helper with jQuery (many methods implemented)

A CakePHP 1.2.6 plugin which allow you to manage your server files similar to Total Commander.

This component uses Yahoo Placemaker service to disambiguate location information and return the best match with a geo marker.
e.g. input: big apple => output: [locationType]=town,[name] =>New York, NY [latitude] => 40.7146 [longitude] => -74.0071

While it may not be a common problem, I ran into this while working on a simple website I was building, and have recieved permission to share it with the community. I had a paginated table, and wanted a SUMed column to support sorting. This is how I did it.

Note that the coming release of CakePHP 1.3, has an awesome feature known as Virtual Fields http://book.cakephp.org/view/1608/Virtual-fields, which are far superior to this little trick.