Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
SourceTree - Mac and Windows client for Mercurial and Git.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
ServiceNow - ServiceNow automates and manages global enterprise service relationships. Create a single system of record for enterprise services, automate manual tasks, consolidate legacy ITIL systems.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.