http://www.hogstadomstolen.se/
Official page of the supreme court of Sweden. Historical part in English, German, Finnish, French and Spanish. Apparently some jurisdiction from the year 2003 on available for free.

http://www.lagrummet.se/

http://www.notisum.se/

http://www.dom.se/

http://www.nyulawglobal.org/globalex/Sweden.htm#_Portals_and_gateways_in%20the%20public

http://www.lagradet.se/

http://www.domstol.se/templates/DV_InfoPage____869.aspx
Case law from the Supreme Court, the Appeal Courts, the Supreme Administrative Court, The Administrative court of Appeal and specialised courts free of cost by The National Courts Administration since year 1980.