ImageOptim - Faster web pages and apps.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications
Clever - syncing between education applications for K-12 schools
Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
Claroline - Claroline is a collaborative eLearning and eWorking platform.