Hierarchical Grid Site Managment is a web application that is used to manage, update and display information about a hierarchical structure (in the concret case, the sites participating in the SEE-GRID project).

Features of Hierarchical Grid Site Managment:
- Has a database with information about a hierarchical structure (GOC-->ROCs-->Countries-->Sites-->Nodes).
- This information is published to the www by a web application.
- Each node of the tree has also one or more admins, which can modify the data of the node which they admin, and also the data of the subnodes.
- The admins of a node can appoint (set/modify/delete) the admins of the subnodes and leave up to them the modification/update of the subnode information (to make their job easier and for decentralization).
- Authentication (recognizing that somebody is admin of a node and has the rights to modify it) is done automatically by the application, using personal certificates, which are issued and verified by a certain certification authority. This means that everybody that is an admin, must have a valid certificate installed in his browser.
- The application also supports i18n and l10n (is multilingual, can be translated into several languages).