Oracle developer VM with Oracle 11g
This one has Oracle 11g database and SQL Developer:http://download.oracle.com/otn/other/virtualbox/dd/Oracle_Developer_Day.ovaSee http://praitheesh.blogspot.nl/2013/10/oracle-developer-day-vm-how-to-use-pre.html for instructions
EDIT : Included comment below from @xwinus:
This link works, but requires little workaround. At first, accept the OTN license agreement on some other site, for example here: oracle.com/technetwork/middleware/oedq/downloads/…, then try the above link again. Now it redirects you to the Oracle SSO login page and allows you to download the file.
Jani Hur created a very useful appliance using turnkey Linux. Check his post.
It does not have Oracle installed but took me less than 10 minutes to have it all set. I tried the zend appliance and had a rough time.
Get the image and follow the instructions.