I was doing a code review for Vinu today (dont ask me which feature it was :-)) and we needed to check the reference doc for a tag. And instead of opening the local doc page, he opened this cool application that had livedocs and it was blazing fast (I know Livedocs sucks ! and yes I work for Adobe ;-)).
I was like 'whoa!! thats a cool app.. Did you write it? Why dont you release it for public??' And then he told me that some one from the community had written it and its already available for everyone. It has been developed by Brian Love and it is available here. It has very small size application, very lightweight and extremely fast.
So in case you haven't downloaded it, download it now!! I am sure you would love it.