There is also TechMoran, Ventures-Africa.com, Africa.com and HowWeMadeItInAfrica.com. In my opinion, the last one has the highest quality articles on a consistent basis. They also produce original content and do not rip off other sites like many of the blogs in this space. It is one big incest fest when it comes to African news on technology and business.
@pmaina Ventures-Africa.com, Africa.com and HowWeMadeItInAfrica.com are too generalist to be mentioned as Tech blogs. They cover from time to time some tech stuff, but not focused enough.
Regarding TechMoran you are right. It is now added.