osTicket is a widely-used open source support ticket system. It seamlessly integrates inquiries created via email, phone and web-based forms into a simple easy-to-use multi-user web interface. Manage, organize and archive all your support requests and responses in one place...
Freshdesk is an award-winning, online help desk software that allows you to support customers over email, phone, the web or even through Twitter and your company's Facebook page. With Freshdesk there is nothing to download or install, you don't have to worry about server...
ProProfs Help Desk Software is a feature-rich issue tracking software that enables online businesses to track all customer issues, requests, and bugs. Offer timely response to your customers through child tickets.
((OTRS)) Community Edition is the free, open source version of OTRS, a ticketing and process automation suite used by service teams to improve communication and customer satisfaction.Discontinued
From https://community.otrs.com :With the release of OTRS 8 at the end of March 2020, ((OTRS)) Community Edition 6 reached its end of support and maintenance. As of January 1, 2021, ((OTRS)) Community Edition 6 will not receive any further security updates.
Get Satisfaction is a community platform that helps companies create engaging customer experiences by fostering online conversations about their products and services at every stage of the lifecycle.
DeskXpand is everything you need to have effective communication between you and your customers. A full-fledged ticket management system that comes with the right tools to provide a seamless and cost-efficient customer experience.
Help Scout scales like any other help desk, but the customer experience is personalized like a normal email.
One inbox for all customer contact channels like Messaging, Chat, Text, E-mail & Call.
Web based software for project management, issue tracking, collaboration, team calendar, kanban board and more... It is a powerful platform especially suitable for application development or product development organizations.