International: http://takethesquare.net/
National + Local: http://tomalaplaza.net/
Recently launched newspaper: http://www.madrid15m.org/quiosco.html
Special events webs: 15october.net
[edit] Platforms
Working, chats and deciding: https://red.democraciarealya.es/ (opensource) built on https://n-1.cc/ platform.
Voting: http://www.virtualpol.com/
Collaborative writing and chat: http://piratepad.net/front-page/
Also twitter networks, not just official accounts: @acampadasol @democraciareal
Facebook page https://www.facebook.com/democraciarealya + Lots of network pages
Virtual assembly (mostly international networks): http://www.mumble.com/
