Almost there! Rated 4 out of 5 stars
This viewer supports 93% of PDFs (or so). It is almost to the point where you can completely use it and nothing else.
Some people claim that this is a source of vulernabilites -- it is not. JS is more secure than Java (by a lot) and a little more secure than plugins, which can cause security holes on their own.
Keep up the good work, guys!