The Penultimate HârnPage Campaign background, Hârnic folksongs, and treatises on medieval agriculture. http://www.minarsas.demon.co.uk/harn/

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

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

Legends of Elorinar Character descriptions and campaign journals. http://luckymonkey.com/harn/

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

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

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

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/

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

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

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

Nolomar Rising The record of an ongoing campaign; character setups, session logs, and some notes from the referee on how it all went together. http://www.nineshadoweyes.com/nolomar/

Brett Slocum's The Fantasy Trip Page Character descriptions and house rules. http://www.weirdrealm.com/tft/