https://www.tone2.com/nanohost.html
manual https://www.tone2.com/nanohost_manual.html
Tone2 Nanohost is a 4.4 meg plugin host, used to make what amounts to a standalone instrument out of any plugin. I have quite a few favorite synths set up that way, Fathom, Hive, Synth1, Oatmeal, Superwave P8, BlueArp etc Nanohost adds some menus for choosing devices for i/o etc
Copy the Nanohost.exe alongside the desired dll, (with the plugin's support folders/data in the same location) and rename the .exe with the .dll's name
Fathom.dll then has Fathom.exe alongside it, inside the main Fathom folder.
Plugins with special characters in the title, like the parenthesis in Hive(x64).dll
will need to be renamed
Cheers