Illinois Pro Bono
Training and practice support for volunteer attorneys. 

National Pro Bono Opportunities Guide
The ABA's guide to nationwide pro bono opportunities.

Volunteer Match
A site dedicated to matching volunteers with volunteer opportunities.

Serve.Gov
An online resource for finding and creating volunteer opportunities in  your community.

The Pro Bono Institute
A non-profit dedicated to exploring and identifying new approaches to the provision of legal services to poor and disadvantaged individuals. 

Pro Bono Net
A site dedicated to providing resources for pro bono and legal services attorneys and others working to assist low income or disadvantaged clients.

Society of American Law Teachers
A community of progressive law teachers working for justice, diversity, and academic excellence.