What are some alternatives?
When comparing HelpDocs and ProProfs Knowledgebase, you can also consider the following products
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
ZenDesk - Zendesk is a beautiful, lightweight help-desk solution.
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs
Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.
Support Hero - Educate your customers through self-help support
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community