UseBB.net is the website of UseBB 1, a classic PHP 4 based bulletin board package, currently out of development (bug fix releases only).
A UseBB 1 migration/conversion module for Drupal 8 has been released: UseBB2Drupal. This module performs migration of users, categories, forums, topics, posts and IP address bans without overwriting existing Drupal content. It also translates internal forum links to the new Drupal paths.
If you own a UseBB 1 forum and are willing to migrate to Drupal 8, please test the module thoroughly on a private or local environment and submit any issues to the issue tracker on Drupal.org. You can also clone the repo from GitHub and create pull requests.
Read more – Posted on 19th February 2017