Get free computers, discounted software, or add neat features to your website. Some of these resources are targeted specifically to non-profit organizations, but they are all worth checking out!
Network for Good
This organization hosts an online donation service for non-profits.
The TechSoup website also has a good listing of organizations that provide computers free or at extremely low cost (usually to recover their costs) to non-profit organizations.
Share the Technology
They match up donations of old computers with non-profits that have a need for them
National Safety Council
The National Safety Council maintains a list, by state, of organizations that recycle computers. Some recyclers will donate used computers to local non-profits, schools, etc.
Connects non-profits with donated or discounted technology products.
Chat rooms and mailing lists in one place! You, and your audience, must sign up for My Yahoo/Groups, but then you can establish a mailing list, a discussion/chat room, and more!