- International Virtual Observatory Alliance
- ArVO, Armenian Virtual Observatory
- AstroGrid, Virtual Observatory United Kingdom
- Aus-VO, Australian Virtual Observatory
- CVO, Canadian Virtual Observatory
- DRACO, Italian Data Grid for Astrophysical Research
- ESA VO, European Space Agency VO
- EURO-VO, European Virtual Observatory
- GAVO, German Astrophysical Virtual Observatory
- HVO, Hungarian Virtual Observatory
- JVO, Japanese Virtual Observatory
- KVO, Korean Virtual Observatory
- NVO, National Astronomical Observatory, United States
- OV-France, Observatoire Virtuel France
- RVO, Russian Virtual Observatory
- SVO, Spanish Virtual Observatory
- VO-India, Virtual Observatory India
- Virtual Observatory Forum
- Web Services for the Virtual Observatory
- Tsinghua Center for Astrophysics
- Chinese University e-Science Grid (CUEG)
- China Grid Forum
- NASA's Information Power Grid
- GryPhyN - Grid Physics Network
- GridPP - a Grid for UK Particle Phyics
- The Particle Physics Data Grid
- UK e-Science
- Home Page for GSFC XML Group NVO project
- Global Grid Forum
- GLOBUS Project