I have not personally used it, but you should check out Gimlet:

http://gimlet.us/

It is a hosted knowledge-base type system written by the folks who wrote 
LibStats (who are fellow Code4lib-bers as well).

~Matt

Jenny Jing wrote:
> Hi, All:
>
>  
>
> Our library is searching for a Help Desk software for our reference desk
> (such as LibStats), 
>
> It is also a knowledge based where we could store the FAQs.  
>
>
>   

-- 
Matt Cordial
Digital Library Software Engineer
Arizona State University Library
480-965-9094