Annabet - Especially good for Finnish leagues and Elitserien.
SFstats - This site has many leagues covered, including Poland Extraliga.
Sportarena.sk - They cover 1st period lines and game totals nicely and are regularly updated.
Eishockey Datenbank - All major European leagues. Rich in features, but it takes some time to find all the stuff.
Betexplorer - Useful for quick analysis when you need only form table and H2H statistics.
The-Sports.org - Covers International hockey and some rare to find leagues. Comprehensive H2H stats.
H2Hstats - As the name says it, site covering H2H stats and team comparisons.
Coteur - Rather interesting features and great coverage of various leagues.
SFRp's Archive' - Collection of various results from history of international hockey.