The app shown in the video is "Float", a floating window multiplexer. When you spawn a window, a PTY is created and its buffer is assigned a region on the screen, which you can move and resize. This gives the illusion of having a "desktop" with windows inside the terminal. Try out this window manager + multiplexer hybrid at https://github.com/henktorius/float   submitted by   /u/Henktorius [link]   [comments]