ResponsiveFramework
1236
Easily make Flutter apps responsive. Automatically adapt UI to different screen sizes. Responsiveness made simple. Demo: https://gallery.codelessly.com/flutterwebsites/minimal/
bootjack
88
Twitter Bootstrap ported in Dart.
simple_grid
15
Inspired by bootstrap , This is dynamic grid layout that you can use Like a bootstrap grid, and the size is following material UI break points. But, don't to worry you can customize your break point like here. This package purely using mediaquery, don't worry about the render.
flutter_next
13
An advanced flutter package to build responsive application accross all platform with ease and has an handful of different types of extension.
Bootstrap-Icons-Flutter
6
Bootstrap Icons library with over 2000 icons.