One thing to consider is that the number of job postings may correlate negatively with project size. The strong representation of Objective C and Android may reflect that the life cycle for mobile applications is a lot shorter than for many other kinds of applications.

Interesting...

Two Things:

1) I'm surprised by how low C# is. Actually, maybe this is more of a not-advertised-on-twitter thing rather than the popularity of the language, which makes the difference interesting.

2) Die flash Die!

A big part of me has to ask: Why do we care? Any software engineer worth his/her weight should be able to pick up any language they need on they fly. A posting asking for a specific language is either catering to HR search terms or is indicative of the narrow mindedness of the managers writing it.

I personally care significantly more about the actual projects involved and in what part(s) of the project's life cycle the role encompasses. Even if it's a position coming into a well-established project (and is therefore firmly rooted in N language(s)), I don't care: I'll pick up whatever needs to be picked up when the job starts.

Sure, checking out today's most popular languages is fun and has it's own appeal, but aren't there better data sources?

If you lump Android into the Java category it makes the top of the list. Unless Android is a new language I haven't heard of.

Have any idea why PHP is still the most widely used web app development language?

Interesting list, thanks for sharing.

I would def have to say interesting because we are building off the same very concept. Not a jobs list, but what we call a social newspaper for the city. In fact, just submitted a thread myself, here: http://news.ycombinator.com/item?id=3295555

I had seen you post earlier when it made the top of HN, you are def doing some interesting work here.

Interesting to see both PHP continued dominance. It was also surprising to see how far down the list Python happened to be.Even though jobs aren't always determined by developers I expected the list to be a little more similar to this one:

https://github.com/languages

Do the ruby and python categories account for postings that are just advertising for rails or django developers without the use of ruby or python in the tweet?

Would like to see this graph intersected the the size of the project and or pay-scale/budget for the salary/project. Let's not forget, quantity != quality.

I'm curious: Most of the listings I see on JobsTractor are rather vague "This company is hiring a developer"-type things, and about 30% aren't actual job listings but links to tech-related articles. Are you actually following the links and tagging them based on their content? If so, that would probably be useful to incorporate into the UI.

So you can actually find out the trend of similar results from craigslist data here : http://craigtrend.com/#!/php/java/objective/sql/ruby/android...

Just press enter on the search to see the results graphed.

Does anybody know what this list would look like for Facebook? I know they still use PHP files but I've been told they use their own mutant version of PHP that compiles into other languages, or something to that effect.

I'm guessing that where you post has a lot to do with what gets posted, for example my guess would be that if you could do this on IRC you'd get C and Perl higher up.