OutlineX is a plugin for Sublime Text the most popular light-weight code editor for multiple platforms. OutlineX enhanced the previous version Outline Plugin for better outlining of the source code file with regions, subregions, and nested functions.
OutlineX makes Sublime more convenient for coding:
A second column beside file browsing column for fast switching between files and regions. Sublime with OutlineX is better compared to other editor software which have a single column for both file browsing and outline that makes switching between editing files, lines slower and less productive.
Detailed outline: With regions, subregions, and nested functions.
OutlineX