Bootstrap 3 is the most used version of the Bootstrap and the largest web framework with a lot of features, all easy to use. We’ve hand-picked the list of  best free Bootstrap  Admin and Dashboard templates
These simple & powerful templates are best for Web App backend, Admin of any type of website like Ecommerce,social media, wedding etc.
For those getting started though, this collection of the best free admin templates will help you launch your project without any financial investment required.

SB Admin

SB Admin Dashboard Template Themify

SB Admin is a free to download Bootstrap admin template. This template uses the default Bootstrap 4 framework. its has nice look with support of charts,tables etc. This is template is good choice for Web UI starter.
This Template is also available in Bootstrap 3.

Demo 
Download

AdminLTE 2

AdminLTE 2 Admin Template Themify

AdminLTE is Popular & most used Admin Dashboard template. It provides a range of responsive, reusable, and commonly used components. It features over 1000 icons, custom-made plugins, 6 different skins and plenty more.

Demo
Download

Matrix

Matrix Admin Template Themify

Matrix is  Responsive Admin Template with Clean, Minimal & Metro design.This theme has plentiful package consisting of two different dashboard presentations, as much as 20 integrated plugins to make your life easier and your design experience smoother and fluid, tons of handy widgets and awesome templates, powerful graphing capacities that make analytical work and data handling or reporting a simple, streamlined task, and much more under the hood.
There is Pro version also available if you need extra features.

Demo
Download

Shoppy

Shoppy Admin Template Themify

Shoppy as name suggests is best for ecommerce websites’s Admin section.Shoppy comes with E-Commerce section that has Product listing with Prices and Flat style Pricing Panels (opens a pop-up on-click with Order processing information – Shipping and Billing).Shoppy is designed broadly to accommodate any business needs with multitude of Elements incorporated that work efficiently. Components like Grids and Portlets, Elements – Numerous Animated Buttons and default Glyph-icons, different Maps, Pages – Sign-up/Log-in, Charts – Circular, Bar, Pie, Polar and Line, and Mailbox – Inbox/Compose. One of its kinds in the Admin Panel category.

Demo
Download

 

Lumino

Lumino Admin Template Themify

Lumino is a clean and fresh admin panel template which includes everything you need for your backend administration panel. Lumino’s many features are a dashboard overview page, various widgets, responsive charts, advanced data tables, forms, UI elements and sample login page.

Details/Download