Yes, both SeamlessDesk and ManageEngine ServiceDesk Plus offer a Free Trial.
SeamlessDesk is designed for Medium Business and Small Business.
ManageEngine ServiceDesk Plus is designed for Large Enterprises, Medium Business and Small Business.
The starting price of SeamlessDesk begins at $57/Month, while pricing details for ManageEngine ServiceDesk Plus are unavailable.
Some top alternatives to SeamlessDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, ReadyDesk, Sitehelpdesk, HESK, Help Desk Premier, DeskXpand and Scopedesk.
Some top alternatives to ManageEngine ServiceDesk Plus includes SolarWinds Service Desk, Jira Service Desk, Symantec ServiceDesk, Freshdesk, Zoho Desk, HelpDesk, ReadyDesk, Sitehelpdesk, Help Desk Premier and Scopedesk.