AngularJS 1.3.0
I feel Angular is better than almost everything out there but still not quite right. It seems way too complex for what it does, and the syntax looks like somebody vomited all over your code. Does two-way databinding have to be so awkward? Angular does help you in writing maintainable code (which is vital for JavaScript - dealing with large JS codebases is hard), but it also ties you to a technology which is probably transitional. I have high hopes for 2.0, and I hope they work out these issues.