Free office tools
If you are looking for web based and free tools for word processing, power point, database creation, and spreadsheets here are some tools to explore.
Zoho www.zoho.com provides a wide range of basic office tools as well as options for managing email, taking notes, creating wikis, and project management.
OpenOffice www.openoffice.org provides tools that are quite similar to those available with Microsoft Office and it has a nice feature for handling images and designs.
Other similar tools?
I have found Google Docs http://docs.google.com/ very useful esp. if your working with people in different locations.