Most On the Edge pages are listed on Paul Lareau's page, these are just the ones I like and find useful.

• Atlas Games has some cool sutff as well as info on their other products.
• Paul Lareau has lots of cool stuff like OMNI league standings, card lists, lots of deck building and strategy info, play variants, lots of links, The Center for Al Amarjan Culture, etc. Check it out.
• Malcolm Rose has pictures of some of the hard to find cards.
• Drawn's Workshop has a bunch of fan-made cards as well as a bunch of decks.
• Wolfgang Caver set up the Temple of the Sommerites, a great site for information on the great Karla Sommers