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Python on top again, but JavaScript falls and mobile makes a strong move

For September, Python was the winner, continuing its run of first place finishes this year. But, in a new development, Down goes JavaScript! For the first time since I can remember, JavaScript did not finish in the top 2 spots, falling down to #4. It appears the mobile platforms may be ascending to the top of the programming jobs pyramid with iOS at #2 and Android at #3.

Programming Languages

Compare JavaScript, Python, Ruby and Java
Compare C++, Scala, Clojure and Go

Server-side Frameworks

Compare Rails, node.js, PHP and Django

Even though iOS/Android took out JavaScript, node.js grabbed its 2nd win in a row over Rails and, as I predicted last month, I see this battle staying close for a while.

JavaScript Frameworks

Compare AngularJS, Backbone, Ember and React

React did it! It caught up to Angular, completing its rapid rise. In one year's time, React closed a nearly 10 point gap to where both React and Angular are now mentioned in about 10% of job posts.

SQL Databases

Compare Postgresql, MySQL and SQL Server

NoSQL Databases

Compare Mongodb, Elasticsearch, Cassandra and Riak

Mongodb came back, reclaiming the top spot after Elasticsearch surpassed it in August's rankings.

Big Data

Compare Storm, Hadoop and Spark

Messaging

Compare Kafka, RabbitMQ and ActiveMQ

DevOps Tools

Compare Chef, Puppet, Ansible and SaltStack

Tech Rank Last Month Change Last Year Change
Python 1 1 0 2 +1
iOS 2 3 +1 5 +3
Android 3 5 +2 4 +1
JavaScript 4 2 -2 1 -3
Ruby 5 4 -1 3 -2
node.js 6 6 0 12 +6
Full Stack 7 11 +4 14 +7
Rails 8 10 +2 6 -2
AWS 9 7 -2 13 +4
AngularJS 10 9 -1 7 -3
React 11 12 +1 55 +44
Java 12 8 -4 11 -1
passionate 13 15 +2 10 -3
DevOps 14 13 -1 30 +16
Machine Learning 15 16 +1 20 +5
Postgresql 16 14 -2 25 +9
Front End 17 23 +6 28 +11
PHP 18 21 +3 29 +11
CSS 19 24 +5 8 -11
Open Source 20 22 +2 22 +2
Tech Mentions Rank Last Year Mentions Last Year Rank Change
Mesos 6 82 0 167 +85
neo4j 5 89 0 165 +76
Kafka 20 46 1 122 +76
AI 6 78 1 150 +72
Perl 5 90 1 151 +61
Pandas 5 92 1 147 +55
Spark 21 44 3 97 +53
Embedded Systems 7 77 1 130 +53
R 13 60 2 105 +45
Scrum 6 81 1 125 +44
Tech Mentions Rank Last Year Mentions Last Year Rank Change
Compass 0 180 7 60 -120
S3 3 108 7 58 -50
App Engine 2 121 5 72 -49
HTML5 12 63 22 27 -36
Bash 4 97 6 66 -31
Celery 4 101 5 73 -28
statistics 9 74 10 48 -26
D3.js 9 73 11 47 -26
Apache 5 88 7 62 -26
jQuery 23 41 28 16 -25