The document describes CHiLOs, a new virtual learning environment for large-scale online courses. It discusses challenges with traditional learning management systems like vendor lock-in and low completion rates. CHiLOs aims to address these with a flexible, open architecture based on small video clips, online books, badges and social networking. A pilot MOOC delivered through this system in Japanese and English saw high engagement levels across many countries. While successful overall, it also identified areas for further improvement like file management and dedicated reading apps.