Gandi offers up to 50% on their hosting and VPS service.
I know we’ve been talking about hosting our website somewhere and I’ve mentioned Gandi.net for a number of reasons including a place I can get VPS using bitcoins but also because they seem like a no nonsense company.
I found out that they actually have a program for non-profits and that they offer a significant discount. I think we should look into it: http://www.gandibar.net/post/2012/08/30/Gandi-likes-associations
Article is a bit old but they still have the major partnerships on their website so maybe this is still going.