CiviCRM - A Constituent relationship management for the Civic Sector
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
Planning Center - Find the information you need to follow up with your congregation and gain insight into your church members, all in one place.
Clever - syncing between education applications for K-12 schools
Odoo CRM - Open Source CRM
Claroline - Claroline is a collaborative eLearning and eWorking platform.