SugarCRM, a free and open-source version of customer relationship management system (CRM).
Tarantool, a NoSQL in-memory database and application server.
TensorFlow, an open source software library for machine learning.
Torch, a scientific computing framework with wide support for machine learning algorithms.
Tracks, a GTD web application, built with Ruby on Rails.
WordPress, a free and open-source content management system (CMS) based on PHP and MySQL.