The Responsive Preview module provides content and theme administrators with a quick way to preview how their site's pages will appear at narrow and wide width dimensions.
The Bundle Terms module enables administrators to tag entity bundles with taxonomy terms. The idea may seem crazy, but before you take out your pitchforks, look at a use case!
You've created a bunch of node types:
Fire Trucks
Fire Stations
Firemen
Police Cars
Police Stations
Policemen
You'd like to have a view that shows all of the node types related to 'Police', and another view showing all of the node types with related to 'Fire'. Using Bundle Terms, you can create those views without tagging any nodes.
Why would I use this module? Doesn't taxonomy already do something like this?
Yes, the core taxonomy module can replicate this behavior of these views, but it would require much more data being saved to your database. For large sites with many nodes, using core taxonomy functionality may not be a viable option.
The real difference is this: The core taxonomy module requires you to create a data point once per entity. Bundle Terms allows you to create a data point once per entity bundle. That's many fewer data points in your database.