From Myanmar's NET:
Myanmar3 is a new Unicode 5.1 font that is used in Myanmar3 Office and it is released by Myanmar Unicode and NLP Research Center, a non-profit organization by Myanmar Computer Federation. Download and install the font inside FONTS folder which resides in Windows directory. Myanmar3 font is a Unicode font implemented according to ISO 10646 that compliant with Unicode Consortium. It also a system used in Microsoft, Apple and Facebook.