Read the article at http://opensource.org/docs/osd
As a result of fundamental differences between free software and open sources, there was a need to more clearly define what open really meant and differentiate it from free. The Open Source Definition (OSD) helped to clarify what was meant by open and to distinguish the open movement from the free software movement. Like the DFSG on which it is based, the OSD is used primarily to determine whether or not software licenses qualify for the label “open source.”
The definition contains the same conditions as Debian with the addition that the License must be technology neutral – the license can’t require that any specific technology or interface.
Debian Social Contract. (1997). Debian Social Contract, Version 1.0. Retrieved from https://edtechbooks.org/-NQxq