ImageOptim - Faster web pages and apps.
XnConvert - XnConvert is an easy image converter for graphic files, photos and images available on Windows...
Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications
JPEGmini - JPEGmini - The Photo Optimization Tool Trusted by Tens of Thousands Image Perfectionists
Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.