There are some techs which are heavily used in Africa to bring out innovative solutions, like Kannel used in RapidPro [1]<p>[1]: <a href="http:&#x2F;&#x2F;knowledge.rapidpro.io&#x2F;knowledgebase&#x2F;articles&#x2F;603507-add-a-phone-channel-kannel" rel="nofollow">http:&#x2F;&#x2F;knowledge.rapidpro.io&#x2F;knowledgebase&#x2F;articles&#x2F;603507-a...</a>