Yes, the application works in Windows 8 and Windows 8.1. I have downloaded version 7.43 and I was able to install the application. The startup was normal and there were no errors during the installation. However, you might need to wait for version 8 to come out for full Windows 8.1 support. Access the official website to find more information as well as to obtain a download link for version 8 when it comes out.