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Yes, both OneDesk and HelpDesk offer a Free Trial.
OneDesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for OneDesk Starts at $12/user/month when yearly whereas for HelpDesk Starts at $29/User/Month when Billed Yearly.
Some top alternatives to OneDesk includes Quickbase , Smartsheet, ClickUp, Freshbooks, Jira, Wrike, TeamGantt, Zoho Projects, Teamwork, ProjectManager.com, Backlog, Worksuite, Quick Base, Resource Guru, Jira Service Desk, HelpDesk, HESK, Height and Scopedesk.
Some top alternatives to HelpDesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.