"Homesteading the Noosphere" (abbreviated HtN) is an essay written by Eric S. Raymond about the social workings of open-source software development. It follows his previous piece "The Cathedral and the Bazaar" (1997).

The essay examines issues of project ownership and transfer, as well as investigating possible anthropological roots of the gift culture in open source as contrasted with the exchange culture of closed source software. Raymond also investigates the nature of the spread of open source into the untamed frontier of ideas he terms the noosphere, postulating that projects that range too far ahead of their time fail because they are too far out in the wilderness, and that successful projects tend to relate to existing projects.

Raymond delves into the contrast between the stated aims of open source and observed behaviors, and also explores the underlying motivations of people involved in the open source movement. He notes that a key motivation for open source practitioners is having a great reputation within the "tribe". In contrast, Microsoft's "embrace and extend" policy complexified and closed up Internet protocols with "protocol pollution."