• Andrew Kirmse – Personal site for a man who has done a huge amount of work computing prominence for peaks across the globe.
  • Baggers without Borders – Forum for peakbaggers who ignore all borders, both political and geographical. Often abbreviated BwB.
  • Peakbagger – Great web resource and app for mountain information worldwide, including trips reports, GPS data and some photos. Also home of the PEMRACS Mountain Range Classification System.
  • – Excellent site especially for the list of 1524 Ultras (peaks with 1500 metres or more of prominence).
  • Pedantic Press – Publisher of books on prominent mountains.
  • Viewfinder Panoramas – Jonathan de Ferranti’s site on topics including DEMs and relative height lists.
  • – Growing resource on peaks across the world with a minimum prominence of 600 metres.