A few days ago I announced the TypeScript Progression Ladder. The reception was very positive and a lot of people commented that they would like to see something similar for other programming languages and technologies.
The project has now been extended and it supports an unlimited number of technologies:
You can check it out at http://www.techladder.io/
As you can see here each technology is described using a simple JSON file so it should be easy to add new lists.
I'm very looking forward to your contributions!