Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Request Tracker - open-source enterprise grade issue and ticket tracking system
Jira Service Desk - IT service desk and customer service software by Jira Service Desk. Powerful ticketing system used by 25,000+ organizations. Try it free today.
NetHelpDesk - Leading provider of help desk software and customer support software. Trusted by IT professionals and service desks for over 20 years.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Juntrax - PSA solution for streamlining operational processes