Airports
Arlanda Airport - the primary Stockholm airport, some 40 km north of city
Bromma Airport - city regional airport, minutes from city, smaller air planes, no international traffic (what we know of...)
Skavsta Airport - "Stockholm south airport", note: 100 km south of Stockholm city, some hour of bus, car, or train

Tranportation Transport
www.flygtaxi.se - airport taxi
www.europcar.se - car rental
www.flygbussarna.com - bus into Stockholm City
www.sl.se - buses, commuter trains, subway
www.transfer.se
www.avis-se.com - car rental
www.hertz.com - car rental
trafiken.nu - traffic cameras, also on this web site

General Information
www.stockholmtown.com - the official visitors guide
cityguide.se/stockholm
www.nojesguiden.se
www.alltomstockholm.se
www.stoinfo.se
www.royalcourt.se
www.riksdagen.se
www.dess.se - Destination Stockholms Skärgård, the archipelago!
www.stockholm.com - ad-financed, private

Conference
www.informus.se
www.konferensguiden.se
www.konferensvarlden.se
www.ulfsundaslott.se 

Culture, Music, Theater
www.dramaten.se
www.intiman.org
www.chinateatern.se
www.sodrateatern.com
www.globearenas.se
www.scalateatern.nu
www.skansen.se
www.cirkus.se

Tickets
www.ticnet.se

Weather
www.vader.se
www.smhi.se
(trafiken.nu - (traffic cameras) also on this web site)