Qingy is a very nice framebuffer-powered replacement for agetty.
It's possible to easily start several X sessions.
Also, it increases security a little: it's impossible to switch from X to console via CTRL+ALT+F1 and stop X session started by startx.
There were some problems but it was easy to fix them:

• Fixing double keypresses in Qingy:
  echo disable-module=linux_input> directfbrc
• Fixing russian characters in mc started inside LXDE started inside Qingy: add the below to ~/.xsession:
  

  #!/bin/sh
  export LANG=en_US.UTF-8
  exec startlxde