Free Non-Profit Hosting

I’ve set up a few non-profits with DreamHost accounts because DH has a wonderful deal for non-profits: free accounts!

I have no real problems with DreamHost, they’ve been great so far. But I also like giving clients options. Does anyone know whether there are other web hosts who do a good job of keeping WordPress sites up who also offer free accounts to non-profits?

I know, I know. You get what you pay for. Still, I’d be curious.