In Open-Source-Software-Projekten entwickeln zunächst voneinander unabhängige Software-Entwickler lediglich verbunden über das Internet Software - und zwar zum Teil ganz ohne monetäres Entgelt.

We study an endogenous growth model where a profit-motivated R and D sector coexists with the introduction of free blueprints invented by philanthropists. These goods are priced at marginal cost, contrary to proprietary ones which are produced by a monopoly owned by the inventor. We show that...