upstream

Part of the river towards the upstream direction.

(open-source software) The original developers or maintainers of software.

To stream upward.

(open-source software) To have (a software library, patch, etc.) accepted by the original developers of the related software, so that they maintain and distribute it.

"I'd be more than happy to upstream your patch."

In a direction against the flow of a current or stream of fluid (typically water); upriver

Involving exploration and pre-production rather than refining and selling

In the direction from the client to the server

Against the current.