HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HelpDesk - The easiest help desk system for a team like yours.
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.