What are some alternatives?
When comparing HelpDocs and Airim, you can also consider the following products
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs
Manula - Manula is an online software for creating user manuals.
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.
Helppier - Helppier provides tools to create interactive user guides in minutes.