Rarity has fallen hard for the lavender mare from Canterlot, but there is just one problem, that certain mare from Canterlot is completely oblivious to it all. Thus, Rarity does everything in her power to escape the dreaded friend zone, from skywriting to asking Twilight's parents for help. But will it be enough? Probably not. After all, Twilight is rather naive, but a mare's gotta try.

The pic that inspired this story, and the cover pic credit goes to ~SigneTheSlaske of Deviantart.com, check them out for more great artwork.

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

The Doctor has had a good, long run through time and space with Ditzy Doo. But it is that time again for him to regenerate bodies. But this time, it seems... different...
What would happen if The Doctor regenerated... as a mare?

Rainbow Dash flies east.

When Rainbow Dash finds herself lost in a new and unfamiliar village, she reaches out to a certain lavender-hued stranger for help. But to Twilight Sparkle, Rainbow Dash is no stranger; at least until she notice her strange new voice, a lack of wings, and a fondness of the word ‘darling’. Intrigued by the uncanny looks to one of her best friends, she decides to lend the newcomer a helping hoof, but things go from weird to weirder when Pinkie Pie happily announces that she too has met her lookalike. Twilight Sparkle and her friends take it upon themselves to find out the truth behind this mystery: who are these doppelgangers? Could there really be another Ponyville out there? And what does it all have to do with Discord’s lost legacy?

Cover art by AireDaleDogz (http://airedaledogz.deviantart.com/)

The Great Equestrian Foam Sword Fight is a fabled event that happens once every fifty years. To win the event, one must incapacitate another pony using the most dangerous weapon known to pony-kind.

The foam sword.

The winner of the event is also said to win untold riches that nopony knows about. With everypony trying to win those riches, the strongest bonds will shatter, the dirtiest of tricks will be played and all bets are off. After all, there can only be one winner.

It is also one of the few times were a pony can legally knock out another pony using a piece of foam.

Tagged other due to fimficiton only allowing 5 characters.

After repeatedly being excluded and left behind from the Mane 6's adventures, only to do his chores at the library, Spike begins to feel bitter about his role as Twilight's assistant.

But upon seeing a shooting star one fateful night, he makes a wish that turns his life upside down.

The results of this wish will force Spike to discover the true meaning of purposes in life, friendship and most importantly, being wary of what you wish for.

Cover art made by SStwins! http://sstwins.deviantart.com/

Look at this fan art done by X9ss! http://x9ss.deviantart.com/#/d52r1xi

When Octavia and Vinyl Scratch decide to combine their respective musical styles into a new genre that will celebrate not only their talent, but also their unique bond, they feel confident that they're the pioneers of the new age. So when the two find their music challenged by another pair of musicians, they set out to make sure that theirs is the best. However, the rival two aren't bad artists themselves, not to mention they’re certainly not… of the same persuasion as Vinyl and Tavi. In the snow-wrapped streets of Manehattan, can they risk exposing their new found -and still taboo- relationship, or will they be doomed to second place?

Incredible cover art by JackiePhantom13! DA: http://jackiephantom13.deviantart.com/

EQD!!
Link: http://www.equestriadaily.com/2012/04/story-mixing-relationships.html

Over the course of a thousand years of monotonous rule, Celestia no longer understands how to connect to ponies, and doesn't bother. But when Twilight Sparkle makes her bombastic appearance, the Princess cannot help be interested.

Featured on Equestria Daily, December 29, 2011

Canterlot... For centuries, Canterlot was the shining gem of Equestria, the pinnacle of pony society. Now, it’s a reminder, a bleak and monolithic warning to the world. 

Changed by the chemical and technological poisons that plague the mountain, an abomination of nature, I wander the greatest disaster Equestria has ever seen. 

... I will escape eventually, and when I do, I hope my friends still see me as Twilight Sparkle, and not the monster that hides among the ruins.