MacType - MacType render windows font smoothly and much more convenient to read.
Google Fonts - Making the web more beautiful, fast, and open through great typography
gdipp - The gdipp project is a replacement of the Windows text render, which brings to you the effect of...
Open Font Library - The mission of the Open Font Library is to promote your freedoms as it relates to the use of type.
fontconfig - Fontconfig is a library for configuring and customizing font access. Fontconfig can:
FontsAdda.com - Collection of 15,000+ free downloadable fonts for Windows and Macintosh.