JpGraph is a PHP library uses GD Graphics Library for graphing data. The best benifit of using JpGraph is to save time. JpGraph include some of the well known graphs--Line, bar, pie, ring, radar and more. The professional version embedded 3 more graphs--odometer, windrose and barcodes. With a great documentation, anyone with the basic knowledge of use a PHP class can make graphs similar to this:

Editor Comment:

I start to learn PHP by manipulating graphics because I like to generate dynamic graphic presentation. Obviously, this became the first PHP class I ever used in my life, which lead me into OO.

There are many JavaScript Calendars, but like always, dhtmlgoodies are the first place to look for when people need a powerful yet simple DHTML script. The JS Calendar from DHTMLgoodies are one of the best. It can work with different types of date input, like "YYYY/MM/DD", "DD.MM.YYYY" and it support 12 languages. Put such JavaScript in a form that requires date input is a great idea.

Editor Comment:

dhtmlgoodies are one of the must go site for all web masters. Most of the popular JavaScript applications can be find there.