B.R.I.D.G.E TO DATA (BTD) is the prevailing resource for capturing detailed global metadata on real-world databases.  The developers of BTD have spent meticulous thought into creating a process for collecting (and maintaining) data by building relationships with key data vendors across the world.  With the breadth and magnitude of global real-world data available, it’s a testament to the scientific staff at BTD to successfully achieve such an ambitious undertaking.

The number of databases featured [in B.R.I.D.G.E. TO DATA] continues to grow at a rapid pace, and each profile is complete. This easy-to-use service gives the best snapshot information about health-related databases. It’s easy to compare databases based on numerous criteria. The B.R.I.D.G.E. staff is extremely helpful in helping you navigate the site for your specific research questions.

It is impressive that your list is getting longer. The search engine (B.R.I.D.G.E. TO DATA) is useful when a researcher gets overview of various databases at a glance.