Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

ManualsLib - Just enter the keywords in the search field and find what you are looking for!

HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.

Manuzoid - Repository that includes user manuals for various products

ScribeHow - Create step-by-step user guides, with a simple click

ManualAgent - Manuals and guides