List of all Guilds?

Does anyone know if there is a list of all guilds somewhere?
i joined a very nice guild last BWE, but i even forgot its names . is there a chance to contact these people or do i have to wait till next beta?

thanks

http://www.guild-hall.net/guildregistrar.php here is quite a big list.

Anyways, next BWE you should still be in that guild unless they have kicked you out.