OpenOffice.org is an Open Source, community-developed, multiplatform office-productivity suite. It includes the key desktop applications, such as a word processor, spreadsheet, presentation manager, and drawing program, with a user interface and feature set similar to other office suites.

Google Sketchup is an easy-to-use 3D modeling software that enables you to create 3D models of houses, buildings and many other objects, using an array of drag and drop tools and materials in a WYSIWYG editing environment.