osTicket is a widely-used and trusted open source support ticket system. Easily scale and streamline your customer service and drastically improve your customer’s experience.
ManageEngine ServiceDesk Plus – IT service desk software for the best customer services. IT technicians can perform IT help desk tasks easily in ServiceDesk Plus, the efficient, all-in-one help desk software. Smart automations, codeless customizations, and powerful integrations are some of the highlights of this helpdesk support software.
HelpDesk.com – A powerful and affordable ticketing system and help desk software for effortless customer support. Get started for free, no credit card required.
UVdesk – Open Source/Free Enterprise Helpdesk Software built on PHP/Symfony for customer support ticket system. Supports Enterprise service desk features like workflow, Email piping, knowledgebase, Mailbox, Ecommerce & Multichannel Integration.
Spiceworks Help Desk – Start working tickets in minutes. Completely free Help Desk software. Android & iOS apps available. Use with free Spiceworks Remote Support for best support.