The term you're looking for exists: user agent. https://en.wikipedia.org/wiki/User_agent https://en.wikipedia.org/wiki/User_agent What you describe came and w

The term you're looking for exists: user agent. https://en.wikipedia.org/wiki/User_agent https://en.wikipedia.org/wiki/User_agent What you describe came and went, subsumed under the homogenizing effect of silos like Facebook. Mashups were the big new thing. There have been various attempts to bring it back, but the inertia of silos makes it hard to find anyone interested.