If you want an account, contact Ziggy via Discord: @ziggymoncher_. Read BonziPEDIA:Requesting accounts for more details.
Bonziworld Rewrite
From BonziPEDIA, the Official BonziWORLD Encyclopedia of varied quality.
Bonziworld Rewrite is an opensource version on bonziworld.org. Fune is currently working on an (undisclosed) new server.
You can check out the bwrw tech demos here.