Windows:

XP, Vista, Windows 7
Internet connection required for online version

Mac:

Mac OS X 10.5, 10.6 
Internet connection required for online version

WriteOnline Installed

When you install WriteOnline onto your computer, there are no prerequisites at all apart from the Operating System. Both standalone and network installers are included on the CD, and there is a specially built installer for RM networks too.

Online version

The online version of WriteOnline requires Java. This is pre-installed on all Macs, and will be installed semi-automatically on Windows if it is not on the machine already.