Discworld.com
Discworld.com is a website founded in 1995 by Sandra and Jo Kidby. Formerly known as PJSM Prints, the website primarily focuses on selling items and books related to Terry Pratchett's works.
The website originally sold prints produced by Paul Kidby but later expanded into selling books and other Discworld related items, similar to the Discworld Emporium that also sells official Terry Pratchett merchandise. While there is some overlap - they both sell the books published by Dunmanifestin Ltd, for example - each has their exclusives. The Emporium has the “Discworld Ephemera” produced by Bernard Pearson and his ex-Clarecraft crew, while Discworld.com has the art prints and special editions of Sir Terry’s books, embossed with his coat of arms and/or signature. Unlike the Emporium, however, Discworld.com has never had a physical store.
cmotdibbler.com
This website was originally set up by Stephen Briggs and predated Discworld.com, however the website had to close after several years of trading. Some of the merchandise is still available via Discworld.com.