Q: Switch between X applications without a window manager I currently have a Java application that interacts with a web application.
The Java application is launched first and becomes a full screen application; then chromium-browser is launched on top of it and also becomes a full screen application.
I would like to be able to switch back and forth between these two applications. 
Is there a way to be able to go back and forth between making these applications visible / the top most using only X and not using a window manager? I don't have a lot of resources for running a typically full-featured window manager.
Machine Info:
Linux Debian 8 i386, single monitor, single display, 4GB disk, 2GB RAM, no swap
$ xdpyinfo | grep version
   version number:    11.0
   X.Org version: 1.16.4


I've tried using wmctrl and xdotools but you need a window manager for those. I keep getting errors such as 

Your windowmanager claims not to support _NET_ACTIVE_WINDOW, so the attempt to query the active window aborted.
  xdo_get_active_window reported an error

and

Cannot get client list properties. 
  (_NET_CLIENT_LIST or _WIN_CLIENT_LIST)


A: I solved my problem by using a small package called alttab: https://github.com/katcaola/alttab
To run it with no window manager, you call it with the flags alttab -w 0.
You can either build/compile the source, or you can install via apt-get (See install instructions here) and be sure to read the window manager setup page.
