For a quick peek into the list:

The Top 10 Languages At Devpost’s Hackathons:

1. HTML/CSS (see note below)
2. JavaScript
3. Python
4. Java
5. C/C++
6. PHP
7. Objective-C
8. C#
9. Swift
10. JSON (which isn’t … really a programming language, but is on their list for some reason, so I’m including #11 too)
11. Ruby

Read the full Techcrunch article to know why.

In stark contrast:

The Top 10 Languages according to IEEE Spectrum’s 2015 Rankings:

1. Java
2. C
3. C++
4. Python
5. C#
6. R
7. PHP
8. JavaScript
9. Ruby
10. Matlab

Note: HTML isn’t quite a “programming” language — it’s a markup language, meaning it’s a means of laying out the elements of a document. But it’s a “language” none the less, and one that pretty much every web developer taps endlessly, so we’ll let the semantic stuff slide