What are some alternatives?
When comparing Helpie Knowledge Base Wiki Plugin and HelpDocs, you can also consider the following products
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
HelpSite - HelpSite is a simple service to help your setup the perfect support centre or help site.
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
ScreenSteps - IT Training Docs For Your Cloud Implementation. Use ScreenSteps when your company implements new cloud technology and you need training docs
AMuseWiki - Amusewiki is more than just a wiki engine, it’s also a powerful authoring, archiving and publishing platform.
Support Hero - Educate your customers through self-help support