The manga is on mangapanda, but it only covers the first arc up until the aincrad arc ends.
The manga went a little bit farther... I have links up above for the Alfheim manga, though I titled it "Part 2:Fairy Dance" since I wasn't too savvy that the arcs were separated by game. It is an incomplete list, which is why I moved over to the show. Might be worth checking out. It's a bit more flushed out than the anime, I believe, though probably not as much as light novels. I really need to get a good link for those translated LNs.
Also, found this:
http://www.baka-tsuki.org/project/?title=Sword_Art_Online#Volume_5_-_Phantom_Bullet_.28Full_Text.29
There are currently 14 volumes released in Japanese with the 15th out in August 2014.
Volume 1 - Aincrad (April 2009) - ISBN 978-4-04-867760-8
Volume 2 - Aincrad (August 2009) - ISBN 978-4-04-867935-0
Volume 3 - Fairy Dance (December 2009) - ISBN 978-4-04-868193-3
Volume 4 - Fairy Dance (April 2010) - ISBN 978-4-04-868452-1
Volume 5 - Phantom Bullet (August 2010) - ISBN 978-4-04-868763-8 *
(<--- GGO starts here)
Volume 6 - Phantom Bullet (December 2010) - ISBN 978-4-04-870132-7
Volume 7 - Mother's Rosario (April 2011) - ISBN 978-4-04-870431-1
Volume 8 - Early and Late (August 2011) - ISBN 978-4-04-870733-6
Volume 9 - Alicization Beginning (February 2012) - ISBN 978-4-04-886271-4
Volume 10 - Alicization Running (July 2012) - ISBN 978-4-04-886697-2
Volume 11 - Alicization Turning (December 2012) - ISBN 978-4-04-891157-3
Volume 12 - Alicization Rising (April 2013) - ISBN 978-4-04-891529-8
Volume 13 - Alicization Dividing (August 2013) - ISBN 978-4-04-891757-5
