Top 9 monkey-patching open source projects

A library for patching, replacing and decorating .NET and Mono methods during runtime

Backport flat-style UIKit from iOS7 to iOS5+

Easy monkey-patching for node.js unit tests

Set of extensions for Autodesk Maya's Python API.

Simple and beautiful monkey-patching library for JavaScript.

A collection of helpful methods and monkey patches for Rails

Collection of dirty hacks in Go

Making monkey patches sane again

Flake8 plugin to control reporting per file and line