Simalam

A simple plugin to manage the responsive image specification for your WordPress images. By default it will add 2x retina support to all of your image sizes.
Adds scottjehl’s Picturefill for a fallback for browsers that don’t currently support the specification.

Simages

A simple plugin to manage the responsive image specification for your WordPress images.

Joseph Fusco

Disables responsive images introduced in 4.4. This plugin is only meant to be a temporary solution to fixing conflicts with certain plugins and themes. Responsive images drive the web forward. 
Credit for solution goes to Birgir Erlendsson.

Disable Responsive Images

Disables responsive images introduced in 4.4.

Simages vs Disable Responsive Images