Cfengine Nova has had stable native support for Windows for years (i.e. no Cygwin is needed).
Everything that is possible on Unix (e.g. run commands, file copy, file edit, etc.) can also be done on Windows, with addition to Windows-specific features like
- Registry management
- File ACL permissions
- Windows service management
- Event log support
- Advanced OS discovery (version, arch, service pack, network, domain, etc.)
For a short introduction, look in Section 11 of the Nova supplement manual: http://cfengine.com/files/Nova_Supplement.pdf
