CPU: 2 core

2GB

LAMP, PHP, Ruby on Rails, JSP, Django, Node.js, Laravel, Go, Express, MEAN stack, webpack, Yeoman, etc...

Bash, C, C#, C++, Clojure, Cobol, CoffeeScript, D, Elixir, Erlang, F#, Go, Haskell, Java, JavaScript, Kotlin, MySQL, Objective-C, Perl, PHP, Python2, Python3, R, Ruby, Rust, Scala, Scheme, Swift, VB, etc...

MySQL, PostgreSQL, MongoDB, SQLite, etc...

Nginx, Apache, MySQL, PostgreSQL Git, Heroku, wget, MeCab, Jupyter Notebook(iPython Notebook), pandas, nltk, MySQL, etc...

Pytnon: Numpy, scipy, pika, matplotlib, scipy, pandas, etc...
Ruby: rails, sinatra, sqlite3, etc... Others: imagemagick

Jupyter notebook(iPython Notebook), Git, Heroku, wget, curl, ping, traceroute, MeCab, pandas, nltk, awssdk, PHP composer, etc...