With Angular 2 release just around the corner, there is now discussion on how will the new version take off. Is it just too different from the 1.x branch to catch significant marketshare in the squeeze of React and a multitude of other options?
Many technologies fall down to obscurity only to be rediscovered later. This is especially true for IT technologies where concepts are thought of well before time, but the supporting infrastructure is simply not there yet. One of these is the Opera Platform from the Norwegian company Opera.
At Google I/O in 2016 there were two browser focused technologies from the company. These are the Polymer project and Angular 2. It might be a bit hard to make sense of why the company is investing in these two overlapping and competing projects.
Riot is a lightweight library for building user interfaces. It springs out of the Muut project which is similar to Disqus, for example. This is why the library is needs to be lightweight and work with a lot of other technologies.
The name GraphQL might suggest that it's a language for working with Graph Databases, similar to SQL for relational databases. But GraphQL is actually a technology that is meant for high level communications between applications that can (but don't have to) connect to a Graph Database.