Databases of Padova Astronomy Department
- Databases maintained by the Padova Astronomy Department (Italy) with a lot of info for each galactic cluster. Three different databases are available: "Ground-based Data", "HST Snapshot" and "HST Deep".
- http://dipastro.pd.astro.it/globulars/databases/databases.html

A Galactic Globular Clusters Database
- Searchable database of galactic globular clusters parameters. Clusters have colour-magnitude diagrams and Digital Sky Survey images.
- http://www.mporzio.astro.it/~marco/gc/

Catalogue of Variable Stars in Globular Clusters
- A catalogue of variable stars in globular clusters, featuring, for each cluster, single variables listed with pulsational parameters (period).
- http://www.astro.utoronto.ca/~cclement/read.html

Globular Star Clusters
- Information from SEDS on globular clusters.
- http://www.seds.org/messier/glob.html