This easy-to-use service gives a comprehensive snapshot on all health-related databases. You can compare databases based on a wide variety of criteria, making it easy to find the best options for the data you need. 

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.

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.