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September Highlights

React extends its win streak to four straight, claiming the top spot again as the most popular software development technology in September's "Ask HN: Who is Hiring" thread. In fact, the entire Top 5 of React, Python, JavaScript, AWS and Full Stack remained identical in September. There was however one big move into the Top 10 by Docker, its first appearance in the Top 10. Java, definitely not a new technology, also had a big month with a jump from #12 to #7.

Look further into the various categories of technolgies to see what trends catch your eye.

Programming Languages

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

Server-side Frameworks

Compare Rails, Node.js, PHP and Django

JavaScript Frameworks

Compare React, AngularJS, Vue.js and Ember

SQL Databases

Compare Postgresql, MySQL, SQL Server and Oracle

NoSQL Databases

Compare Mongodb, Elasticsearch, Cassandra and Riak

Big Data

Compare Storm, Hadoop and Spark

Messaging

Compare Kafka, RabbitMQ and ActiveMQ

DevOps Tools

Compare Chef, Puppet, Ansible and the DevOps term itself

Virtualization and Container Tools

Compare Docker, Kubernetes, Mesos and Vagrant

Total Postings Trend

Rankings and movers

Tech Rank Last Month Change Last Year Change
React 1 1 0 3 +2
Python 2 2 0 1 -1
JavaScript 3 3 0 2 -1
AWS 4 4 0 4 0
Full Stack 5 5 0 10 +5
node.js 6 6 0 13 +7
Java 7 12 +5 12 +5
Machine Learning 8 7 -1 16 +8
Postgresql 9 9 0 7 -2
Docker 10 16 +6 18 +8
DevOps 11 14 +3 15 +4
Rails 12 15 +3 5 -7
Ruby 13 8 -5 8 -5
golang 14 11 -3 6 -8
Android 15 17 +2 14 -1
iOS 16 13 -3 9 -7
AngularJS 17 18 +1 11 -6
passionate 18 10 -8 17 -1
C++ 19 21 +2 26 +7
Django 20 19 -1 24 +4
Tech Mentions Rank Last Year Mentions Last Year Rank Change
Vue 13 66 1 181 +115
TensorFlow 8 88 1 179 +91
Lambda 10 81 2 150 +69
Redshift 15 64 3 128 +64
Sidekiq 8 86 2 143 +57
jenkins 10 80 3 119 +39
Rust 9 83 3 122 +39
Kubernetes 43 23 15 56 +33
statistics 13 67 4 100 +33
Haskell 12 70 4 101 +31
Tech Mentions Rank Last Year Mentions Last Year Rank Change
Solr 3 137 7 85 -52
Backbone 8 90 22 41 -49
Pandas 3 138 6 90 -48
Celery 3 131 7 84 -47
Scrum 4 121 9 77 -44
Asp 3 129 7 87 -42
Objective-C 5 104 10 68 -36
CoffeeScript 5 114 7 82 -32
Web Services 9 85 15 53 -32
HTML5 8 91 12 65 -26