: A Chrome extension that provides desktop alerts for new messages so you don't have to keep the tab open. Content Management Tools
However, if you still have the old installer file, it technically runs. facebook for windows 7
Always be careful when downloading third-party software for Windows 7. Since the OS is no longer receiving security patches from Microsoft, it is more vulnerable to malware hidden in "free" app downloads. Performance Tips for Facebook on Windows 7 : A Chrome extension that provides desktop alerts