HelpDesk offers Free Trial, but C2 ATOM does not.
C2 ATOM is designed for Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for C2 ATOM Starts at $50/User/Month whereas for HelpDesk Starts at $29/User/Month when Billed Yearly.
Some top alternatives to C2 ATOM includes Freshservice, ManageEngine ServiceDesk Plus, SolarWinds Service Desk, Jira Service Desk, Symantec ServiceDesk, InvGate Service Desk, IBM Control Desk, Micro Focus Service Manager, HelpDesk, TOPdesk, BoldDesk and Scopedesk.
Some top alternatives to HelpDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.