Here is a quick reference table of some of the more referenced stat sites. Please feel free to add suggestions or new sites in the comments section and we will continue to update the table below. Thanks!
1. NHL / TSN / ESPN
Type: Standard Stats
Highlights: Attendance Stats / Trophy Tracker / Leaders / Game by Game Stats / Faceoff Leaders / Road Points / Shots by Team / Penalty Kill
2. Extra Skater
Type: Fancy and Standard Stats
Highlights: Live Game Stats / Player Deployment Stats / Quality of Teammates / Team Stats (also features a very cool Fenwick chart during live game summaries)
3. Behind the Net
Type: Fancy and Standard Stats
Highlights: Player Standard Stats with Average Shooting Distance OR Add filter for more shooting options
Time on Ice Stats with Top Linesmen
Player breakdown including Zone Starts/Finish, Quality of Competition, etc.
4. Cap Geek
Type: Money Stats, Salaries, Cap, etc.
Highlights:
CALCULATORS: Trade Machine / Cap Calculator / Fantasy Calculator / Waiver Calculator
OTHER: UFA Finder / Bonuses / Team Stats (including Cap, Depth Chart, etc.)
5. Shift Chart
Type: Time on Ice / Shifts
Highlights: Shifts by game, (Sort players by On-Ice to see lines)
6. Hockey Analysis
Type: Standard, Fancy Stats
Highlights: WOWY Stats by Player / On-Ice Fenwick Stats / HARO HARD & HART Ratings / Team Power Play Stats
7. Hockey Reference
Type: Standard, Historical Stats. Kind of a catch all DB
Highlights: Box Scores / Search for Season Matching Criteria / Search for Games / Search for Games by Team Logs
e.g. this site lets you find stats such as “the last time the Ottawa Senators let in 50 shots was in 1998..” etc.