Here is a screenshot of the Firefox browser from Mozilla.org compiled to use the m17n library, shown here rendering “Hello” in Southeast Asian and East Asian languages. This is one of the m17n team's experimental projects. (They have also tied m17n to the Cairo1 SVG rendering library and to the MagicPoint2 presentation program). Notice the Myanmar and Khmer examples. (In this screen shot you can also see the problem with using Bitstream Cyberbit for rendering Thai).
1. Cairo Vector Graphics Library, http://www.cairographics.org/.
2. MagicPoint Presentation Software, http://member.wide.ad.jp/wg/mgp/.