Yes, both TaskSift and osTicket offer a Free Trial.
TaskSift is designed for Large Enterprises, Medium Business and Small Business.
osTicket is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for TaskSift Starts at $7.50/Month when Billed Yearly whereas for osTicket Starts at $9/User/Month.
Some top alternatives to TaskSift includes Freshservice, HelpDesk, osTicket, Snappy, Support.cc by 500apps, PagerDuty, YetiCloud, Spike.sh, Mission Manager, StatusCast Incident Management and Suptask.
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.