Ask HN: Which startup has the best support documentation?

I am looking to revamp the support site for my startup and looking for some inspiration. We are in user-engagement and analytics domain. We have our Android , iOS , Windows and javascript SDK. All have been up there on our support site. But right now it is more 'developer friendly'. But as 'user-engagement and analytics' is also used my many marketers/sales folks, I would like to make my support site both developer-marketer friendly.

Looking for great support site from which I can find good points and implement it in my own support site. Thanks.