What Does Open-Source Software (OSS) Mean?

Open-source software (OSS) is software that is distributed with source code that may be read or modified by users.

Techopedia Explains Open-Source Software (OSS)

Unlike traditional software distributed in an unchangeable compiled format, open-source software is delivered with both compiled and non-compiled formats, allowing open code modification. In traditional software licenses, this privilege would be reserved for copyright holders.