
iGetcha.org is a suggested opensource and free software directory for the technological sustainability of nonprofits. It's also a simple, non-techie shortlist to assist organizations with a SOHO.
Tokbox is the latest rage in web based communications. Skype may have a hold over the free video and voice calls at the moment, but don't forget, this is the technological world and there's always another disruptive technology that comes along. The amazing thing about Tokbox is that it does not require downloading software! It's completely web based and you can talk to up to 20 people in a video call! That's more than enough to get a small nonprofit working virtually on their social benefit work :D