noun
original program
Refers to a computer program that is the original version, as opposed to a copy, modification, or derivative work. Common in software and copyright contexts.
このソフトはオリジナルプログラムを改造したものです。
This software is a modification of the original program.
オリジナルプログラムの著作権は開発者にあります。
The copyright of the original program belongs to the developer.