Configurable
codeblocks.org
Codeblocks is a cross-platform IDE built around wxWidgets, designed to be extensible and configurable. Runs on Windows and Linux.
18,749 
$ 716,400.00
eslint.org
A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.
39,017 $ 344,160.00