Grid-initiatives and projects worldwide.
Globus Alliance – is the project on working out fundamental grid-technologies. One of the most important achievements of the Globus project was the creation of the Globus Toolkit – one of the first versions of the “middleware” for implementing the distributed grid infrastructure.
This toolkit implements service mechanisms that cover:
- Protection issues,
- Detection of information,
- Management of data and resources ,
- communication,
- Error detection, etc.
Projects for developing middleware for implementing grid systems:
Unicore – http://www.unicore.eu/
ARC – http://www.nordugrid.org/middleware/
Completed:
GLite http://glite.cern.ch/
EMI: http://www.eu-emi.eu
Condor : http://www.cs.wisc.edu/condor/
Legion: http://legion.virginia.edu/index.html No 2017
Projects to create large-scale grid infrastructures:
DEISA, Distributed European Infrastructure for Supercomputing Applications, (Europe)
OSG, Open Science Grid (“Open Science Grid”, USA)
GridPP, UK Computing Grid for Particle Physics (UK)
NorduGrid (Scandinavia)
Completed:
NAREGI (Japan) http://www.naregi.org/
TeraGrid (USA) https://www.teragrid.org/
The EGEE project.
The WLCG project 
The WLCG (Worldwide LHC Computing GRID) project was adopted in 2001 at CERN
to create a global information and
computing infrastructure for the processing,
storage and analysis of data obtained during experiments conducted at the Large Hadron Collider.
To implement this grandiose task, a large-scale global grid infrastructure has been built on the basis of regional centers of various levels, which provides modeling, storage, and data transmission from the Large Hadron Collider.
EGI Infrastructure (EGI – European Grid Infrastructure) 
After the completion of the EGEE project, the project “European Grid Infrastructure” started functioning in April 2010.
This initiative is based on cooperation between the
National Grid Initiatives (NGIs) and
Coordinating organization (the EGI Organization, EGI.eu)
This cooperation should ensure the further development of a stable and constantly operating global grid infrastructure that ensures optimal use of computing resources and storage resources.