At long last, my list of recommended Supernatural fanfiction.
I've been collecting these links for many months, but thought I ought not to post anything until I wrote a nice summary of each piece. But I've discovered that I'm as bad at summarizing others' stories as I am my own. (In the ever-popular fanfiction.net refrain, "I suck at summaries.") Also, I found myself too inclined to critique while I summarized, writing things like "I love the mood of this piece, but the characterization of Sam is wrong." Better for you to decide those things for yourselves. All I'll say is that I read dozens of Supernatural fanfiction pieces every week, and in my view, these are the very best.
Most, you'll note, are pre-series, since I find the back story of Supernatural to be the most compelling part of the drama.
You'll also note: no Wincest, no boys sprouting wings or growing bellies, no cross-over (but only because I don't know any other fandom), no alternative/speculative/future fiction, and only a handful of female love interests.
Listed here in approximate chronological order.
Pre-Series:
Right after Mary’s death, to Sam’s teens:
A Man about a Car, by pdragon76
http://www.fanfiction.net/s/3703576/1 Widdershins, by angstslashhope
http://hopeful-fiction.livejournal.com/45868.html Goodnight Nobody, by montisello
http://community.livejournal.com/the_backroads/3623.html#cutid1 Just a Boy, Wanting, by hionlife
http://www.fanfiction.net/s/3516271/1/ little rattle stilt, by angstslashhope
http://hopeful-fiction.livejournal.com/50364.html Ten Going on Thirteen, by dodger winslow
http://dodger-winslow.livejournal.com/38463.html Feels Like North, by hionlife
http://www.fanfiction.net/s/3362504/1/Feels_Like_North Lake Effect, by kimonkey7
http://www.fanfiction.net/s/3478716/1/Lake_Effect Straying from the Beaten Path, by angstslashhope
http://hope.oscillating.net/2007/07/14/fic-straying-from-the-beaten-path Cross Country, by Zillah-fic
http://zillah-fic.livejournal.com/3856.html The Old Block, by freshflutter
http://fleshflutter.livejournal.com/4337.html?page=1 Red Oak Day, by vehemently
http://community.livejournal.com/spn_summergen/5042.html Freaks and Monsters, by dodger winslow
http://dodger-winslow.livejournal.com/23314.html This Place is Haunted, by the losing kind
http://ebolacrisis.livejournal.com/2427.html Eat your cake, too, by zelost-mind
http://zelost-mind.livejournal.com/14789.html Resistance Training, by Eloise bright
http://eloise-bright.livejournal.com/113335.html The Square Root of Pi, by elanurel
http://x-strangeangels.livejournal.com/22921.html Egg and Spoon Racing, by Miss Blackheart Valley
http://community.livejournal.com/spn_summerlove/5567.html Bean Town Rising, by pdragon76
http://www.fanfiction.net/s/3856723/1 Christmas Past by kroki refur
http://kroki-refur.livejournal.com/71604.html A series of three connected stories by onelittlesleep:
Hammers in Our Hands
http://onelittlesleep.livejournal.com/106743.html Followed by:
Porchlight Burns So Far Away, Miles Away
http://onelittlesleep.livejournal.com/120182.html And
The Lion’s Jaws
http://onelittlesleep.livejournal.com/160891.html Sam getting ready to leave:
Pray God I See Headlights, by onelittlesleep
http://onelittlesleep.livejournal.com/52367.html MRSA, by Emily Brunson
http://janissa11.livejournal.com/199776.html#cutid1 But I Never Could Sharpen No Blade, Quite the Way He Say, by one little sleep
http://onelittlesleep.livejournal.com/51814.html John and Dean alone:
Negative Space, by angstslashhope
http://hopeful-fiction.livejournal.com/47234.html Elsebound, by whereupon
http://whereupon.livejournal.com/41508.html Post-pilot with pre-series flashbacks:
Still No Rain, by hionlife
http://www.fanfiction.net/s/3586710/1/Still_No_Rain Cowboy Up, by liketheriver
http://liketheriverrun.livejournal.com/2722.html#cutid1 And It Went Right to My Head by kimonkey7
http://kimonkey7.livejournal.com/62034.html Godzilla, by quellefromage
http://quellefromage.livejournal.com/54064.html Red, by big pink
http://big-pink.livejournal.com/16952.html Dazzleland, by big pink
http://big-pink.livejournal.com/22710.html And Fear the Silence is the Voice of God, by Flora
http://florastuart.livejournal.com/64227.html Ramble On, by gaelicspirit
http://www.fanfiction.net/s/3266757/1/Ramble_On Post-Pilot
DNR, by big pink
http://big-pink.livejournal.com/29454.html Inheritance (Descent and Distribution), by a preludetoanend
http://apreludetoanend.livejournal.com/66196.html