Sidequest creates helpdesks and task ticket queues entirely inside Slack, combining the best features of helpdesk systems and modern task managers.
Halp - Slack-first ticketing for internal helpdesk
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Roby - Refreshingly simple helpdesk for Slack & Teams users
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
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.