OpenAppMkt represents an open applications market – an AppStore for HTML5 based applications. I tried it on my iPhone and I must say it's incredible. If you are looking for a proof that HTML5 is progressing in the speed of light – check out OpenAppMkt.
The store lets you browse through categories, filter apps, search, get a list of top selling apps etc. Many of the applications are free. It can run on any browser supporting HTML5 (certified for iPhone, iPad and Android smartphones for the moment).
BTW, mobile Web (code name for Java Script, CSS, and mostly HTML5 technologies) is the fastest growing technology among mobile developers in the last 12 months.
BTWx2, the head of this initiative was recently requited by Facebook, which gives a hint about Facebook HTML5 initiatives known as Project Spartan (read more in here).
Head over to OpenAppMkt from your smartphone, bookmark the page and you will get the Store working.