NetSuite for Nonprofits - NetSuite for Nonprofits is a cloud-based donor management system for your nonprofit or social organization.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Planning Center - Find the information you need to follow up with your congregation and gain insight into your church members, all in one place.
UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system
Veeva Vault - Enterprise Content Management
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.