Afric Xpress - Mobile solutions provider for African markets

From their site:

Afric Xpress (AX) is a solution provider for mobile phone-based and other electronic transaction services for African communities in the continent and abroad. The company’s mission is to foster electronic–based markets in Africa by turning mobile phones and computers into commercial platforms with the ultimate goal of empowering our customers with security, speed, and convenience. We serve our international customers with online services available on our website while the primary channel for our customer in the continent is the mobile phone. 

We also provide mobile banking solutions in partnership with the telecom providers and various banks. Our current target for these services is the local Ghanaian population with cell phone connectivity and a local bank account. These mobile phone services are solely for local use and country specific. They are not available online and do not require any credit card processing. For more information about this service, visit www.txtnpay.net 

Spore - using mobile phone to irrigate crops

Small-scale sugarcane farmers in South Africa are using cellphone-based technology to decide when to irrigate their crops. A pilot scheme launched by the South African Sugar Association at Pongola in Mpumalanga Province and Makhathini in KwaZulu Natal has shown the high-tech system can help boost production and save water, a precious commodity in these dry regions. Indications are that the mobile-based initiative can reduce farmers' irrigation costs by €200/ha.

The system, called My Canesim, uses automatic weather stations, the Internet and cellular technology to produce up-to-date information about when to irrigate crops. Extrapolating information from field and real-time weather data, My Canesim estimates the recent, current and future water balance, as well as the crop status and projected yield of a given plot. It then automatically generates and distributes simple irrigation advice by SMS to farmers' mobile phones.

EPROM - Entrepreneurial programming and research on mobiles

EPROM, part of the Program for Developmental Entrepreneurship within the MIT Design Laboratory, aims to foster mobile phone-related research and entrepreneurship. Key activities include:

• the development of new applications for mobile phone users worldwide
• academic research using mobile phones
• the creation of a widely applicable mobile phone programming curriculum

EPROM has now expanded to 10 countries within Sub-Saharan Africa!