Pros:
It is an open source project which will make it easy for access and improvement.

1. It is an offline application making which gives it an edge over alternative online apps.
2. It is available in different languages making it easier to use by different people of different languages
3. It offers quite a variety of courses.
4. It has downloadable resources and other references for further research
5. It offers self pace learning and can work on any device making it accessible anytime, anywhere

Cons:
None I could see