Good IDEs are everywhere. RStudio for R, Pycharm for Python, IntelliJ for Scala. But these are specialized in one language and what I wanted to have is a tool for broad and multi-language data science tasks with autocompletion, FTP, highlighter, formatter, split editing, local/remote evaluation and REPL. I especially wanted REPL functionality that takes single inputs, evaluates them, and returns the result for quick prototyping. Sublime Text is a popular text editor with massive amount of plugins that provides quite a lot of what you need. By adding custom REPL, Sublime Text becomes an all-in-one tool for every data science task from hadoop ETL, Spark machine learning, HTML/CSS editing to markdown reporting.