"Around the world diverse actors are working to develop technology that directly improves social conditions. This report refers to these types of technology as ‘social tech’. Examples of social tech include anti-corruption systems for citizens to report bribes; communications platforms for refugees on the move; and systems that allow farmers to plan their next crop. The resulting report surveys how social tech is produced and used across sub-Saharan Africa, and what interventions might enrich and improve this ‘ecosystem’. Its primary focus is on information and communication technologies (ICT), though many of its lessons will apply more broadly. It also concentrates on accessible systems, in which the end user is the person who benefits, rather than on specialised systems for professionals. Commissioned by funders in the social tech sphere, the purpose of this report is to find where intervention might improve the ecosystem. We believe that addressing key weaknesses in the ecosystem can help new social tech initiatives – with powerful base-of-the-pyramid benefits – to succeed." (Executive summary)