Here is another nice freebee from MIT. An HTML/Bootstrap 4 Admin Template.
Demo
https://modularcode.io/modular-admin-html/
Download
https://github.com/modularcode/modular-admin-html/archive/master.zip
Other Bootstrap 3 Admin Templates (Free)
Charisma Demo
http://usman.it/themes/charisma/
Charisma Download
https://github.com/usmanhalalit/charisma/archive/master.zip
AdminLTE Demo (Free)
https://adminlte.io/themes/AdminLTE/index2.html
AdminLTE Download
https://github.com/almasaeed2010/AdminLTE/archive/master.zip
Just a quick note. Dashboard implementation requires some heavy lifting to program them into your website. You are basically implementing a simple CRM. The above are “templates” with UI elements/code that can be used in their creation. They are not drag and drop, plug and play.
Cheers,
Vince