Introducing Stack Overflow Trends - A new way to play the "my programming language is better than yours" game. (Ruby is still comfortably ahead of Elixir by the way).
Das Keyboard 5Q - Mechanical switches and colored LED keytops that can be controlled over the internet. So kind of a 50-pixel output device.
Prepack - "A tool for making JavaScript code run faster" by optimizing away as many object allocations and intermediate computations as possible. Not for production use but probably worth keeping an eye on.