Version 2.20.0 of the Next-Generation Clustered Heat Map (NG-CHM) viewer is now available. Significant new features in recent versions are listed below:

The Next-Generation Clustered Heat Map (NG-CHM) viewer is available as a standalone, single-page HTML application. You can use the application to view NG-CHMs that you have downloaded to or created on your computer. You can even use it while not connected to any network. (Naturally, any link outs to web resources will not work when not connected.)