The unattainable is unKNOWn at ZomboCom.

Did you mean “offline” as in not online (which makes little sense for a browser), or more like “not tied to a specific service that may hold your data hostage or infringe upon your privacy”?

If the latter, then I’ve found that a simple HTML file with manually added entries works great. I’ve set it as the home page in all my browsers. I retain full control over content and layout as well.)