Cape Reptile Institute South Africa
- Non-government scientific organisation involved with research of South African herpetofauna.
- http://www.crepinstitute.co.za/

The Exploration Society of Southern Africa
- A forum for the conceptual and physical exploration of Southern Africa and beyond.
- http://www.explorationsociety.org/

UNDP : South Africa
- UN's global development network, advocating for change and connecting countries to knowledge, experience and resources to help people build a better life.
- http://www.undp.org.za/

Institute for Commercial Forestry Research
- Privately funded forestry research institute in South Africa.
- http://www.icfrnet.unp.ac.za/

EcoTraining
- Aims to provide potential nature guides with the basic grounding, knowledge and professionalism required to enter this rapidly-growing industry.
- http://www.ecotraining.co.za/

Wildlife and Environment Society of Southern Africa
- News and educational issues affecting the South African environment in general.
- http://www.wessa.org.za/

The Fossil Fuel Foundation of Africa
- Organisation constituted to further science and technology in the carbon and energy industries. Information about South Africa's coal resources and their utilisation.
- http://www.fossilfuel.co.za/

The Cycad Society of South Africa
- Provides information about mission and membership, the quarterly journal, pages with photos and information on individual species, and general articles.
- http://www.cycadsociety.org

Kwazulu Natal Fire Protection Association
- Non profit Association which specializes in aerial veld and Forest fire fighting.
- http://www.firestop.co.za

Trans-Caledon Tunnel Authority
- The South African implementing body for all works on South African soil for the Lesotho Highlands Water Project. Overview, documents on legislation and engineering.
- http://www.metsi.com/

Mafisa
- Provides a range of consultancy services in business development and ecotourism. Includes a client list, details of expertise and experience, and national project analysis documents.
- http://www.mafisa.co.za

National Botanical Institute
- The mission of the NBI is to promote the sustainable use, conservation, appreciation and enjoyment of the exceptionally rich plant life of South Africa, for the benefit of all its people.
- http://www.nbi.ac.za/aboutnbi.htm

The Succulent Society of South Africa
- Aims to promote the cultivation and conservation of succulents and to make a contribution to the protection and conservation of all indigenous flora and their habitat.
- http://www.succulents.net/society/

CSIR
- The CSIR is South Africa's largest Science and Technology Research Organisation.
- http://www.csir.co.za/