There are many bootstrap admin templates that are free and also premium ones. Bootstrap is designed to help people of all skill levels – designer or developer, huge nerd or early beginner. You can use it as a complete kit or use it to start something more complex.
Unlike other front-end toolkits, Bootstrap was designed first and foremost as a style guide to document not only its features but best practices and living, coded examples. Bootstrap is tested and supported in major modern browsers like Chrome, Firefox, and Internet Explorer. Bootstrap provides an unparalleled array of features and reusable components that let you hit the ground running.
The following are some of the free Bootstrap Admin Template.
1. SB Admin
SB Admin is free to download Bootstrap admin template. This template uses the default Bootstrap 4 styles along with a variety of powerful plugins to create a powerful framework for creating admin panels, web apps, or back-end dashboards.
2. SB Admin 2
SB Admin 2 Bootstrap admin theme, dashboard template, or web-app UI starter. The theme features a variety of custom jQuery plugins to add extended functionality past the built-in Bootstrap UI features.
It is an admin dashboard & control panel theme. Built on top of Bootstrap 3, AdminLTE provides a range of responsive, reusable, and commonly used components.