I would not call Cyberdog a failure. Yes, it wasn't fast and it didn't have a great rendering engine, but frankly, neither did the competition, and I found its look and feel so good that I kept using it for a long time (with IE as a backup for pages it did not handle, IIRC)
OpenDoc, on which it was built, failed, but even that, I would not call a complete failure. It may have just been bad timing (of the Newton vs iPhone kind). If you are looking for a large hobby project: I would love to see something OpenDoc-like today running in a browser. Require viewers to be freely downloadable from e.g. GitHub, but allow developers to sell their editors, and see where it gets.
OpenDoc, on which it was built, failed, but even that, I would not call a complete failure. It may have just been bad timing (of the Newton vs iPhone kind). If you are looking for a large hobby project: I would love to see something OpenDoc-like today running in a browser. Require viewers to be freely downloadable from e.g. GitHub, but allow developers to sell their editors, and see where it gets.