Fltplan
FltPlan is a free Flight Planning website for General Aviation pilots.
www.Fltplan.com

AirNav
The pilot's window into a world of aviation information
http://www.airnav.com/

Flight Schedule Pro
Schedule a Flight
https://www.flightschedulepro.com/

National Weather Service
Current and recent METAR, TAF, and Short-term TAF data access reports from around the world, along with an explanation of Meteorological Character Codes
http://weather.noaa.gov/

Flightprep
Weather information
http://www.flightprep.com/rootpage.php?page=nexradgraphic

AOPA
Aircraft Owners and Pilots Association
http://www.aopa.org/

NBAA
National Business Aircraft Association
http://www.nbaa.com/

Aviation International News
Aviation news from around the world
http://www.ainonline.com/index.html

Aviation Week
http://www.aviationweek.com/

AVweb
Aviation news resource
http://www.avweb.com/

Landings.com
http://www.Landings.com