Popular alternatives include Zendesk Support, Zoho Desk, Tidio Helpdesk, Support.cc by 500apps and BoldDesk.
Key factors include Incident Management, Multi-Channel Communication, Macros (Templated Responses), Document Storage, Customizable Branding and pricing.
Tools like SysAid, LiveAgent, Help Scout, Zoho Desk and Freshdesk are best for small businesses for Help Desk Software.