OpenOffice 3.3 is one of the most powerful office suites in existance, comparable only to MS Office. It includes a word processor, a spreadsheet program, a tool for presentations, a mathematical formula program, a drawing program and a database.
If you want to use it, you need to download and install: OpenOffice 3.1 Khmer/English installer for Windows. (138 MB) OpenOffice 3.2.0 RC5 Khmer/English installer for Mac. (144 MB) OpenOffice 3.1 Khmer/English for Linux
Open OpenOffice Writer. Go to Tools-->Options-->Language Setting-->Language Set the "Locale Setting" field to "Khmer" . Close the Window (OK) And you are ready to work in Khmer.