Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Udemy - Online Courses - Learn Anything, On Your Schedule
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Adobe Captivate Prime LMS - Adobe Captivate Prime LMS is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
Keybase Chat - End-to-end encrypted chat built into Keybase
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!