VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
foobar2000 - An advanced freeware audio player for the Windows platform.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.