> I whould like to develop khmer script engine to write Khmer Unicode
> on Unix linux OS.Right now ,Khmer unicode works well with Microsoft
> Uniscribe.Are there any tools or solutions to use Khmer Unicode on
> Unix OS? I want to develop Khmer script engine like Uniscribe to use
> with Khmer Unicode (Open type font).
Check this: http://www.freetype.org/index2.html
FreeType is an open-source implementation of OpenType which runs on most
OS's. AFAIK, it also includes the shaping for most Indic and SE-Asian
scripts. I don't know the exact status of Khmer, but the page above also
references mailing lists where they may tell you.