The site has changed its web address and is 100% free for fuel planning. Supports add-on payware aircraft e.g. PMDG NGX and iFly NG (among others).
Simple to use, gives metar to help plan your departure/arrival runways, gives fuel load and aircraft weight along with appropriate Cost Index.
Gives total flight time from the blocks to destination, gives total available fuel time including reserve.
HIGHLY RECOMMENDED.
Did I mention it's FREE? FuelPlanner.com