From Rick Mansfield at This Lamp, who posts a screenshot of Accordance for Windows (Beta):
What you’re seeing above is an internal beta for Accordance 10.x for Windows, running in Windows 8. Yes, Accordance, which has been exclusively on Apple platforms since it was launched in 1994, is coming to Windows. This is the second internal beta released in as many weeks. Although an exact release date (beyond simply 2013) has not yet been announced, the build I have is already starting to impress.
Read Rick’s whole post here. So far I like what I’ve seen, too.