Salesforce has done a VERY good job of both providing free/discounted licenses to non-profits and also pressuring SF Ecosystem/App vendors to providing similar

Salesforce has done a VERY good job of both providing free/discounted licenses to non-profits and also pressuring SF Ecosystem/App vendors to providing similar free/discounted licenses. You can get started pretty quickly with a full on Salesforce install and quite a few useful apps completely free if you have under 10 users.