ezyFAQ is a very powerful yet affordable solution to setup a FAQ/knowledge base without all the complexities (and cost) of Zendesk and other solutions. Studies have shown that most customers would much prefer to quickly find the solution themselves rather than wait on an email response or make a phone call.
ezyFAQ allows for customising your FAQ/knowledge base with branding, CSS and HTML. ezyFAQ also allows you to bring your own domain for a seamless integration with your existing website - e.g: help.mydomain.com. The live search, analytics, responsive design (also beautiful on Tablets and Phones), pre-built themes and templates allow you to customise a little or a lot!
More information can be found at www.ezyfaq.com