Pledger is a startup that aims to put NGO's in touch with micro-volunteers
I've been contributing to African School For Excellence, a school that is re-defining education
I started the Nissan 200SX owner's club of South Africa back in 2003, and it is still an active club.
eFlatz.com was a social networking site I built to allow people within complexes/apartments/suburbs to communicate with one another and their body corporate.
Cred is a mico-payment gateway built in Ruby on Rails, with a fully-documented REST API and Wordpress plugin, to allow content publishers to charge small amounts for their content.