1. First of them is XPages Extension Library. It is very interesting because of minimum two reasons:
- It was created to speed up the web development in xPages by providing the ready-to-use Web 2.0 xPages artifacts.
- It's OpenSource! IBM contributed the code and actively participate in development. That's even more valuable because Lotus Domino Designer is available for free and anyone can participate in the project.
Here is the video about it: