Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Adobe Learning Manager - Adobe Learning Manager (formerly Adobe Captivate Prime LMS) is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
Siimpl Bookmarking - Start collecting and organizing what interests you
Udemy - Online Courses - Learn Anything, On Your Schedule
Tixio - Work as a team without the clutter! Organize, optimize & coordinate.
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!