» Columbia's HârnWorld Series    The company product web page.    http://www.columbiagames.com/cgi-bin/query/cfg/allharnitems.cfg

» Harn Files    House rules, character descriptions, and links.    http://www.peakpeak.com/~fedifensor/games/harn.htm

» Harn Religion Team    Details of all Harnic religions. Maintained by a team of Harn fans across the world, including many who helped work on the HarnMaster Religion supplement.    http://pages.sbcglobal.net/harn-religion-team/

» HârnForum    The official online Hârn discussion forum.    http://www.harnforum.com

» HârnPage    Official fan page for HârnWorld, featuring new rules and campaign background. Accepts submissions.    http://jumi.lut.fi/harn/

» Lýthia.com    A portal site to the world of Hârn. Features a FAQ, download, and Fan Projects.    http://www.lythia.com/

» The Schylla & Charibdis Pax Tharda Home Page    A guide to the Thardic Republic.    http://www.ketherian.org/paxtharda/

» UserMode:HarnWorld    Features two adventures, and a new players' guide.    http://www.usermode.org/harn.html

» WarFlail's Armoury    Features house rule and a database of Hârn fan-sites.    http://www.warflail.com/

» WebRing: harnring    Group of interlinked sites also known as the "Harnworld and Harnmaster Ring".    http://www.webring.com/hub?ring=harnring