Using Maven, you get Maven repositories. Tools like Nexus ou Artifactory have the ability to mirror (or proxy) remote repositories and self-hosted ones to expose an aggregated view of all downloadable artifacts (or dependencies in the Bower jargon). You get the same mechanism for other dependency managers like Ivy oy Gradle (Maven, Ivy/Ant & Gradle are more than just dependency managers, but it's not the point here).
With Bower, you can set up remote registries from which dependencies will be downloaded. But a great thing in a corporate environment would be to have a self hosted repository working like those describe above.
I have search the Web but did not find any convincing solution. Did you know any of them?