AppFog is a great solution for hosting applications with a wide choice of languages / frameworks .. from Drupal, Php, node to Java and Python..


But also with a powerful command line tool to manage source code for example :
Application Updates
update <appname> [--path] |
Update the application bits |
mem <appname> [memsize] |
Update the memory reservation for an application |
map <appname> <url> |
Register the application to the url |
unmap <appname> <url> |
Unregister the application from the url |
instances <appname> <num|delta> |
Scale the application instances up or down |