Windows only: System tray application GDI++ replaces the Windows font engine with smoother OS X-style rendering instead of Microsoft's ClearType.
In the screenshot, original Windows fonts are on the left, GDI++ fonts are on the right. Using the application is simple enough—just extract and run the gditray.exe utility, and then make sure the font rendering is enabled in the system tray menu. You'll probably have to refresh the applications on the screen to see the changes—just minimise and restore them and you should see the changes immediately. The font rendering is based originally on the GDI++ library from drwatson. That means most of the documentation is in Japanese, the application is clunky, and hooking into Windows this way could cause system instability, so definitely proceed with caution. Still, it's an interesting application that might be worth a look if you really dislike Windows fonts. Mac vs. Windows font rendering is a common subject of debate, and it really comes down to a matter of personal taste—we aren't recommending one over the other, but now Windows users have an easy-to-implement choice in the matter.