How do I find a job at a non-profit?

Salary has been my #1 focus for the last few years. I've done well for myself, but now I'm looking at what I want to accomplish outside of making money.

I'm a software generalist, with people + technical skills. My salary requirements are flexible, but I want to find something I'm passionate to work on.

Where should I be looking? Are there recruiter that specialize in non-profit placement?