http://www.lingvosoft.com/English-Slovak-Dictionary/

http://www.wordgumbo.com/ie/sla/slv/erengslv.htm

http://www.otpalca.sk/

http://dent.ii.fmph.uniba.sk/ui/dict.html

http://www-old.ectaco.com/online/diction.php3?refid=668&lang=18&word=hallo&direction=1