This was mentioned here backdrop/backdrop-issues#5845
and here #870

Currently we dont have a way to get a list of all projects available on BackdropCMS.org. The closest is calliing installer_browser_fetch_results() with a high items_per_page (9999 for example).

Even then this can only return one project type (9999 modules for example).

We can fix this by skipping the query filter in borg_pbs_project_browser_server_query(). So:

  if ($items_per_page != 'all') {
    // Only send back the requested amount unless all projects were requested.
    $start = $filters['page'] * $filters['items_per_page'];
    $count_query = $query;
    $count_result = $count_query->execute();
    $query->range($start, $filters['items_per_page']);
  }

And optionally skipping the type query:

  if ($type != 'all') {
    // Filter out projects based on type unless all types were requested.
    if (isset($filters['type'])) {
    $query->condition('n.type', 'project_' . $filters['type']);
  }
}

This would allow installer_browser_fetch_results(array('items_per_page' => 'all', 'type' => 'all')) for example.

Note that Drupal has opted to do a 4 times a day dump of this info to file since there are many many more projects there than we have (we're up to 991 total as of today).