Kapta - Key account management software

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.

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Clever - syncing between education applications for K-12 schools

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

Claroline - Claroline is a collaborative eLearning and eWorking platform.