“It's now very common to hear people say, 'I'm rather offended by that.' As if that gives them certain rights. It's actually nothing more... than a whine. 'I find that offensive.' It has no meaning; it has no purpose; it has no reason to be respected as a phrase. 'I am offended by that.' Well, so fucking what."
― Stephen Fry (on censorship) 

Whipping Post by CBFirestarter

Whipping Post - CBFirestarter

A dark well written fanfic in which John sells Dean into slavery just before his eighteenth birthday. Castiel wishes to rescue Dean but cannot blow his cover for the resistance.

Source: http://archiveofourown.org/works/12538856

My Throat is An Open Grave by inkandpaperqwerty

My Throat is An Open Grave - inkandpaperqwerty

A well written fanfic in which Dean buys "The Boy with the Demon Blood" at a monster auction aiming to prevent him from saying 'yes' to Lucifer.

Source: http://archiveofourown.org/works/15294669

Finding Your H(e)aven by Winterwolke

Finding Your H(e)aven - Winterwolke

An engaging fanfic in which FBI agent Dean encounters prejudice because he is an omega. Fellow agent Sam does his best to support his brother.

Source: http://archiveofourown.org/works/15049721

Jared and the Undead Bartender by tsukinobara

Jared and the Undead Bartender - tsukinobara

A gentle fanfic in which lonely IT guy Jared befriends reclusive barkeep Jensen.

Source: http://archiveofourown.org/works/15301239

A Rose By Any Other Name by MaraLynnCade

A Rose By Any Other Name - MaraLynnCade

An excellent follow up to 'Rose Among Thorns' by HazelDomain. Sam and Dean develop their relationship as Alpha and Omega and have some hard decisions to make.

Source: http://archiveofourown.org/works/12260601

Rose Among Thorns by HazelDomain

Rose Among Thorns - HazelDomain

A dark fanfic in which Dean volunteers to be turned omega to save Sam from the same fate.

Source: http://archiveofourown.org/works/7247149

Beware The King's Harem by whiskygalore

Beware The King's Harem - whiskygalore

An engaging fanfic featuring King Jared and a young naive Jensen.

Source: http://archiveofourown.org/works/15141683

Red In Tooth and Claw by glasslogic

Red In Tooth and Claw - glasslogic

An excellent sequel to 'The Cause Sanguine.' Sam and Dean become involved in collecting a cursed mirror and all hell breaks out.

Source: http://archiveofourown.org/works/344283

The Cause Sanguine by glasslogic

The Cause Sanguine - glasslogic

An engaging fanfic in which Dean befriends a wolf who turns out to be werewolf Sam.

Source: http://archiveofourown.org/series/15369

Honey and Flies by glasslogic

Honey and Flies - glasslogic

A well written novella in which Dean encounters Bobby's foster son Sam after he woke up in the morgue.

Source: http://archiveofourown.org/works/336114

In Arcadia Ego Series by glasslogic

In Arcadia Ego Series - glasslogic

An excellent series in which vampire Dean strikes a deal with hunter Sam to supply the vampire with blood. Meanwhile Sam is puzzled by the animosity of his fellow hunters.

Source: http://archiveofourown.org/series/15311

Surfacing Taken by imonlyobsessed

Surfacing Taken  - imonlyobsessed

Despite the odd title, this is a well written fanfic in which Sam and Dean become involved with BDSM on a hunt.

Source: http://archiveofourown.org/works/3990766

A Mile in My Shoes by ADeedWithoutaName

A Mile in My Shoes - ADeedWithoutaName

A humourous fanfic in which Dean and Sam exchange eating and exercise habits for six weeks. Dean becomes attracted to Sam's increasing girth. Meh, not my kink.

Source: http://archiveofourown.org/works/13555566

Flight Risk by TwoBoys2Love

Flight Risk - TwoBoys2Love
Jensen is a socially-challenged family doctor. Jared is running away from an abusive partner when Jensen hits him with his car. They are drawn to each other but hampered by Jared's trust problems and Jensen's 'friend with benefits' relationship with Jeff.
Source: http://archiveofourown.org/works/2044173

Somethin’ Like Soulmates by Chuchiwan

Somethin’ Like Soulmates - Chuchiwan
3.5 stars. Sam Campbell is an omega masquerading as a beta to further his law career. Then he meets alpha Dean Winchester working in a bar. This is a first spn fanfic by Chuchiwan, the plot holds up pretty well but the author needs a beta to field the typos.
Source: http://archiveofourown.org/works/13357611

A Touch of Evil by nyxocity

A Touch of Evil - nyxocity

An extremely dark J2 fanfic in the style of Dexter. Jensen Ackles is a forensic pathologist and serial killer of his fellow murderers. His sister Daneel is a police detective. His life is overturned when he comes into contact with trauma surgeon Jared Padalecki. 
An accomplished piece of writing, not for the squeamish.

Image by monkeyJade
'Jensen shouldn't… but he wants. Fuck, he wants. Want such as he has never known, wrapped in wonder and dripping with sin, straining at the end of its chains.'

Source: http://archiveofourown.org/works/12546612