Back in May, I spent an afternoon at Silicon MilkRoundabout. Silicon MilkRoundabout is a recruitment fair for techies. It’s specifically aimed at people who want to work for start-ups around the Old Street area (although they aren’t particularly stringent about sticking to that – for example, the BBC were there).

We were given a booklet containing details of all of the companies who were recruiting. Those details usually included information about the tech stack that the companies used.

Over the weekend, I went through that booklet and listed the programming languages mentioned by the companies. The results speak for themselves.

There were 135 companies at the event. About twenty of them unhelpfully listed their tech stack as “ask us for details”.

Here’s the graph:

Usage of Programming Languages by Companies at Silicon MilkRoundabout

I’ll obviously have some more to say about this over the next few days. But I wanted to get the raw data out there as soon as possible.