This story is a sequel to Hard Reset

After the events of Hard Reset Twilight's life and mental well being are slowly returning to normal. Her recovery is cut short, though, when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself. In over her head, Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be.

Available in Spanish thanks to dgs1993
Series TV Tropes page

This story is a sequel to A Stitch in Time

Having discovered the message left for her by Star Swirl the Bearded in the distant past, Twilight once again finds herself caught up in the middle of a struggle against forces far greater than herself. In order to even stand a chance she'll need to travel further and wider than she ever has, and forge some unlikely alliances with old enemies. All to bring down the powers that have manipulated and shaped her entire life, and retake control of her own future.

The conclusion of the Time Loop Trilogy, which began with Hard Reset
Available in Spanish thanks to dgs1993
Series TV Tropes page

Yuri is living his life in a secluded part of the Moscow metro. That is, until tragedy strikes a neighboring station and Yuri and his friends are forced to undertake a journey through the dangerous metro system.
In Equestria a lone changeling scout is starving in a cold forest and is getting desperate to find a new source of love to help her hive survive.
Friendship can be formed out of necessity. Morals can be bent in the name of survival.

(Proofread by Kalash93)

You know what they say once you hit rock bottom...

Celestia and Luna were born as unassuming foals in troubled times. But already marked for greatness, the simple earth ponies stand to face a world set against them, full of danger, fear, and sadness. A world they will change forever.

A sweeping epic taking place before Equestria was made, where Celestia and Luna must rise from normal foals to become the Princesses we know them as, beset from all sides by monsters, other ponies, and even the forces that govern nature. Their tale is as tragic as it is triumphant.

Currently on hiatus. For more info, go here.

(Cover and internal art by Madmax)
(Editing credit predominantly Lightside Luc)

There's no place like Donut Joe's diner to unwind after a long, hard day. Good company, great coffee, and the best dang cucumber omelette in Equestria. After the week Celestia's had, she could really, really use a place to get away from it all.

Here, the regulars all know her as Sunny Skies, the unassuming workaholic mare who hasn't taken a day off in... ever. Well, today's her lucky day. Sunny's about to have one apocalyptically long holiday.

Luna's become delirious with a fever, Discord's fled the castle in terror, there's a living moon locked in Celestia's dining room, and something is very, very wrong with Equestria's sugar.

Put on a pot of coffee, folks. We've got an all-nighter on our hooves.

Holy horseapples, Sugarfree has AMAZING FANART NOW! Cover art by the wonderful StyxLady.
Crazy huge thanks to Luminary, Brawny and Eakin for pre-reading and editing this horrid thing.

It has been several months since the disappearance of Twilight Sparkle..

One night, after watching her sister raise the Moon and set the heavens alight, Princess Celestia begins to bed down for the night, only to be interrupted by portal forming in her room. From out of the portal comes none other than Twilight Sparkle, garbed in strange armor.

Princess Celestia, along with Luna, Cadence, and Shining Armor, are overjoyed by the Element of Magic's return, but are justifiably curious as to where she had been and what she had been doing. And so, Twilight begins her tale. A tale of survival against impossible odds. A tale of a people fighting for the most basic right of all sentient beings. The right to exist.

Equestria has made the discovery of the century. They found what they believed to be the last of the mythical race of the humans trapped inside of a large crystal. Curiosity takes hold and with the help of Twilight Sparkle and the elements of harmony they decide to set it free. But was that a wise decision?

Cover art not done by me.

Robert Parker is a 24 year old ex-web developer living in New York city. In the wake of the conversion movement, he has seemingly lost everything. Haunted by the same nightmare every night, he soon realizes that he must make a choice.

To those unfamiliar with the Conversion Bureau: it is a scenario created by an author named blaze in which Ponies either appear in the human world or have lived beside humans without incident for millennia. One day, in the face of all the damage humanity has done to its world, the ponies offer a solution: undergo conversion to become a pony and allow the world to be inundated with Equestria's influence: thus healing it and bring forth a golden age.

Many different authors have taken many different approaches to this idea, all of them are worth checking out.

http://www.ponychan.net/chan/fic/res/53616.html (The current thread)
http://www.equestriadaily.com/2011/04/conversion-bureau-compilation.html (The compilation post on EQDaily. *NOT UPDATED*)

The planet destroyed. The flood gone and the covenant obliterated.
All because of one man, Sergeant J. Forge. The man who literally stared death in the face to save those aboard the 'Spirit of Fire'.
But what if the detonation of the slipspace drive tore a larger than intended hole in the fabric of space, essentially creating a portal to another world.
What if Forge hadn't perished on that day, but awoke to find himself in a completely new and foreign world ?