- 2004 – 1st ICAT in Bulawayo, Zimbabwe – Theme: Land based projects
- 2006 – 2nd ICAT in Bulawayo, Zimbabwe – Theme: AT for Public Health
- 2007 – TV special and newspaper interviews on Appropriate Technology, Guyana
- 2008 – I day regional symposium on appropriate technology, University T&T, Trinidad
- 2008 – Guest lecture on Appropriate Technology at University of Khartoum, Sudan
- 2008 – 3rd ICAT in Kigali, Rwanda – Energy and Climate Change
- 2009 – 1st Howard University AT Symposium, Washington, DC
- 2010 – 2nd Howard University AT Symposium, Washington, DC
- 2010 – 4th ICAT –Accra Ghana, Theme: AT for Water and Sanitation
- 2011 – 2 day workshop on Socially relevant computing, University of Pretoria
- 2011 – 3rd Howard University AT Symposium, Washington DC
- 2012 - co-sponsor, Workshop on Knowledge Management, Khartoum, Sudan
- 2012 – 5th ICAT – Pretoria South Africa, Theme: Policy to inform AT research and practice
- 2014 - 6th ICAT - Nairobi Kenya, Theme: Appropriate Technology for the 21st Century, Technological Innovation to Empower Africa
- 2016 - 7th ICAT - Victoria Falls Zimbabwe, Theme: Sustainable Technologies to Empower Communities – Bridging Theory with Practice
- 2018 - 8th ICAT - Porto-Novo Benin, Theme: Endogenous Knowledge, Appropriate Technology and Innovation: Linking the Past and the Future