Upstream

[Oralee]

Financial and Transaction Management Software for the Energy Industry A software product by W Energy Software

[Lizzy Liz]

In the opposite direction from that in which a stream or river flows; nearer to the source.

[Kai]

(moving) on a river or stream towards its origin:

[Tracie Lynn]

In software development, upstream refers to a direction toward the original authors or maintainers of software that is distributed as source code, and is a qualification of either a version (released by the original authors, based on their upstream source code), a bug or a patch.