Yes, both osTicket and GLPI offer a Free Trial.
osTicket is designed for Individuals, Large Enterprises, Medium Business and Small Business.
GLPI is designed for Large Enterprises, Medium Business and Small Business.
The starting price of osTicket begins at $9/User/Month, while pricing details for GLPI are unavailable.
Some top alternatives to osTicket includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Jira Service Desk, Freshdesk, HelpDesk, SysAid, UVdesk, Jitbit Helpdesk, eStreamDesk, ReadyDesk, Spiceworks Help Desk, HESK, BoldDesk and GLPI.
Some top alternatives to GLPI includes Freshservice, ManageEngine ServiceDesk Plus, SolarWinds Service Desk, Jira Service Desk, Symantec ServiceDesk, IBM Control Desk, osTicket, TOPdesk, Spiceworks Help Desk, iSupport Software, Richdesk and Scopedesk.