Here are some useful links found while trawling through the web. Most are kilt or at least Celtic related, while others are not. More sites will be added to this list over time. If you find an interesting link, feel free to send it to us.
Scottish Tartans Authority A charity devoted to the study, recording, preservation, and promotion of all things tartan. Many of the website's features are free while others require a paid yearly membership.
The Scottish Register of Tartans A newly founded government institution which features a searchable tartan database. Membership is free.
Celtic Languages (and one non-Celtic...)
Foras na Gaeilge - Irish language resource.
An Comunn Ghàidhealach - Scottish Gaelic language resource.
Yn Cheshaght Ghailckagh - Manx language resource.
Bwrdd Yr Iaith Gymraeg - Welsh language resource.
Warlinenn - Cornish language resource.
Kervarker - Breton language resource.
Scots-online.org - Scots language resource