On secret assignment from Princess Celestia herself, Twilight investigates a powerful magical artifact for clues to the mystery of Luna's transformation in the evil Nightmare Moon. Incautious use of the artifact sends Twilight hurtling back in time. Can Twilight discover what caused Luna's transformation? And will she ever make it home again?

Kickass cover art used with permission from Bitz.
http://allthebitz.tumblr.com/

The Cutie Mark Crusaders are underhoof in the wedding preparations, with nopony letting them help. Princess Cadence rescues them from their boredom by running them through a flower girl rehearsal and talking about their loved ones.

In which I, Twilight Sparkle, (the biggest idiot in Equestria), fail miserably, utterly, and conclusively in my valiant endeavor to keep my decidedly-more-than-Friendship feelings hidden from one Rainbow Dash (the sexiest fastest mare in Equestria).

Twilight Sparkle prides herself on following and sticking to her plans, but she isn't as organized as everypony thinks. Her master list, the plan for her life, has an item that she has never been able to check off; and the time has come to fix that. How hard can it be? All she needs to do is go on a date and get a kiss.

Now available in hard or soft cover!

During her entrance exam, Twilight's powers goes far out of control, leaving Celestia a shell of herself and Equestria in ruins. Now Nightmare Moon is free, but even she can't stop the Tyrant Filly. She flees through time and space, finding herself in an Equestria familiar to us but odd to her. Can the Mane Six help her stop a Twilight out of control?

Fanfiction.net link here!
Weekly featured fic in Authors Helping Authors group

TV Tropes Page, with sincere thanks to DrTempo.

Cover art from here.

A day in the life, and a glimpse into the mind, of Ponyville's favorite mail carrier and single mom. But if she had the choice of any one day for everyone to read about, it probably wouldn't be this one...

Upon her return from Dodge Junction, something has changed inside Applejack. Her feelings for a certain pony have become as solid as the diamonds that adorn said pony's flank. However, will Ponyville's own Southern belle ever pluck up the courage to be the mare that wins Rarity's heart?

Minty's favourite pair of socks are missing, whatever will she do?

She'll just have to go and find them, that's what!

Sequel to "Apple Bloom's Family". Apple Bloom and the Crusaders travel to Manehattan to meet her father, the banker pony Orange Counter. She discovers her place in the Orange family and the bright lights of Manehattan, teaches a new circle of friends the Crusader way of life, and learns more about herself than she ever dreamed possible.

In a desperate and costly bid to escape from his stone prison, Discord is left weak and helpless. Luckily for him, there is a nearby unicorn that he can hide in while he regains his power.