Logisim - Logisim is an educational tool for designing and simulating digital logic circuits.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
BOOLR - Open-source digital logic simulator
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
Logicly - - Design circuits quickly and easily with a modern and intuitive user interface with drag-and-drop...
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.