- Sierra Club
- SEA START RC
- SciTech Connect
- SciTech Connect
- Robert Falkner
- ROAR - University of East London
- rksi.org
- ResearchOnline@JCU
- Purdue Department of Biological Sciences
- Potsdam Institute for Climate Impact Research
- Parliament of Vanuatu
- Pacific Disaster Net
- Oregon State University
- Opus
- OpenKnowledge@NAU
- Open University of Tanzania Repository
- Open Research Online
- Ontario Climate Change Data Portal
- OCL - Oilseeds and fats, Crops and Lipids
- OceanObs`09
