How blockchain can complement open source: 
The Cathedral and The Bazaar is a classic open source story, written 20 years ago by Eric Steven Raymond. In the story, Eric describes a new revolutionary software development model where complex software projects are built without (or with a very little) central management. This new model is open source.
Eric’s story compares two models:
read more: Opensource.com bibryam
Supporting Open Source.
Have you tried: Sailing in Africa ?
