All of the free Bootstrap admin and dashboard themes below have been pre-built to be used as a complete solution so that you can rapidly create the front-end dashboard of your web app. As well as all of Bootstrap’s handy collection of widgets, they all include many extra addons, plugins, and features (plugins for charts & graphs, calendars, file managers, and so much more). Everything you will ever need for building dashboards.
1.Admin.io with Envato Elements subscription
2.Now UI Free Bootstrap 4 Dashboard Template
3.Adminator Bootstrap 4 Admin Dashboard Template
4.Chain with Envato Elements subscription
5.Material Dashboard Free Bootstrap 4 Admin Template
6.Vue Material Design Bootstrap 4 Admin UI Kit
7.CoreUI Bootstrap Admin Template
8.Bootflat Admin – Flat UI Bootstrap 3 Admin Dashboard
9.Startmin – Open Source Admin Dashboard Template for Bootstrap
10.Paper Dashboard – Free Bootstrap Admin Template
Nice Collection.You can also list Hope UI Here -A Best Admin DashBoard Template and UI Component Library.