UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
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
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.