Mathnetics is an API for creating advanced, interactive, Web-based mathematical applications. It defines various important mathematical objects that are inter-related and on which many numerical calculations can be done. It also features rendering of 3D objects onto an SVG canvas (to do so, it includes certain utilities such as browser sniffing, DOM node selection, and DOM readiness detection), which is quite robust. A few basic 3D objects are given (Line, Sphere, Cube), but the user can define any 3D object desired as per the specification.
Sigma Visual builder is a WYSIWYG tool for rapid Web application design and involved script programming. With this powerful builder, Web applications can be developed using only drag and drop, just like what you do in VB or Delphi. More than 35 common AJAX components, including Tabs, Dialog, TreeGrid, TimeLine, and many other Web GUI components are supported. Its rich client-side API works with any backend (such as PHP, .NET, Java, or Python) or static HTML pages. The generated application has wide cross-browser compatibility.
Compare Ikea Prices is a Firefox addon that displays prices from Ikea stores in other countries and converts the prices to Euros. It works for most Eurozone countries. After installing, it has to be turned on by checking an "Enable price comparing" checkbox in Tools > Compare Ikea prices.
oo.WebsiteTools is a set of basic tools which are needed on almost every Web site. Using these tools speeds up your Web development radically. It consists of three different parts: oo.Admin, oo.Sql, and oo.Ajax. oo.Admin is used to administer the site and allow users to manage their accounts. oo.Sql lets you change database backends without changing your SQL code. oo.Ajax is an AJAX library that can load and update div elements, send forms without reloading the page, and more.