XL Deploy - Enterprise-scale Application Release Automation for any environment
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Octopus Deploy - Octopus is a friendly deployment automation tool for .NET developers.
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
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.