TITLE: Online visualization tool for planes (spans in linear algebra)
QUESTION [11 upvotes]: I would like to visualize planes in 3D as I start learning linear algebra, to build a solid foundation. Surprisingly, I have been unable to find an online tool (website/web app) to visualize planes in 3 dimensions. For example, I'd like to be able to enter 3 points and see the plane.
Does something like this exist?

REPLY [2 votes]: You should checkout CPM_3D_Plotter.
It runs in the browser, therefore you don't have to download or install any programs.
Because it is browser-based, it is also platform independent.
The user-interface is very clean and simple to use: