Twilight Sparkle summons Fluttershy and Pinkie over when she has a new spell that should let her see into different realities. She wants to see if there was really an endless number of possible realities. Pinkie ends up having Twilight royally mess up the spell; it gets overcharged and switches their Fluttershy for a different reality's Fluttershy.

Both Fluttershys have to adjust to their new lives, all while Twilight tries to find a way to switch them back.

Co-written by Poison Cure
Edited by Lathier

This story is a sequel to Shard: Flim and Flam's Traveling Sideshow Spectacular

Much to the surprise of Fluttershy, Twilight's brother Shining Armor shows up at their door. After a break-up with his marefriend, the unicorn stallion has decided to take some time off and visit his sister. While glad to see her brother, Twilight also wishes to spend some alone time with her marefriend, and help Shining get over his recent break-up. Fortunately, there are plenty of mares who would be interested in a lieutenant in the royal guard, and Twilight has some friends that are more than willing to help out.

Rated Teen for flirtatiousness.

This story is a sequel to The Code's Apprentice

Sequel To : The Code's Apprentice

The land of Equestria has been changed forever.

New monarchs sit upon the thrones of the Sun and Moon, the once almighty power of Harmony overturned to make way for a new Diarchy of Balance. Political unrest and turmoil have engulfed the land, and at the very center of it all, Princess Celestia - renamed Tia Sunbeam - seeks atonement for the crimes she committed in the name of Eternal Harmony.

With much of her power sealed away, Tia must live amidst the citizens of Ponyville as the world changes all around them. As Ponyville works to rebuild following the struggle between student and teacher, they must cope with the edicts of a new government determined to bring equality to all creatures, beliefs, and ways of life - even those that were long since banished to the dark places of the world.

Tia Sunbeam will struggle with her own deeply held convictions on the way the world should be, versus the way it will now become. She will face a truth she has long since denied, and realize the true meaning of Harmony. And perhaps, most importantly of all... She must make some Friends.

Cover art by SinSays at http://sinsays.tumblr.com/ - Go spend some money with her! :D
Oh, and go check out my new side story - Rise - It's going to become relevant here!
(character tags are not comprehensive! Some are being kept secret! ;3)

For a thousand years, the Code of Harmony has ruled Equestria, and the Code of Dissonance has sabotaged its works at every turn. Now the war for control over the land will come to a head, and one unicorn's decision may decide the fate of all.

For though she does not know it, Twilight Sparkle is the shining example of the Code of Harmony. Her teacher, Princess Celestia is Harmony's most powerful master and she knows her enemies are hatching a plan that threatens to cast down the Harmony of her throne and all she has sacrificed to create.

What she does not know is her foe seeks a new Apprentice to turn to his dark ways. A unicorn with seemingly limitless potential for magic, whose thirst for knowledge may yet lead her down a dark path, who is known to be such a faithful student of magic, eagerly seeking the truth no matter how forbidden it might be...

Sequel: Code of Harmony

This story is a sequel to Rainbow Unicorns

Rainbow Burst -- a unicorn version of Rainbow Dash and Princess Celestia's personal student -- has been causing more mischief than usual around the castle (much to Blueblood's chagrin). Deciding the best thing would be to give Rainbow more responsibility and should spend some time away from the castle, Princess Celestia sends Rainbow to Ponyville to oversee the Summer Sun Celebration. While there, she and Spike meet some very odd (but familiar) ponies.

(I know, I have a problem. I couldn't resist. Anyway, enjoy.)

This story is a sequel to Shard: Harmony in the Clouds

Flim and Flam's Traveling Sideshow Spectacular! A collection of strange and unusual creatures from the furthest reaches of the continent taken on the road for ponies all over Equestria to see. They are always looking for new exhibits to bring in the bits. Some of what you see can be quite surprising, especially when one of the displays looks familiar.

(a story set in the Shard-verse.)

Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.

What does it mean to be somepony? To truly exist? To know love, laughter, jealousy, anger; what does it mean to live? Organization XIII seeks these answers, and will do so regardless of the cost. For what does a Nopony care for the morals of a Whole Pony?

Hyxs wakes up one day with no memory of who, or what, she is. But then a cloaked stranger comes to her, and gives her a new purpose in life; to open the citadel of Kingdom Hearts, and become a Whole Pony again. To do this she must travel through the many worlds of the multiverse, and collect the Hearts of others. But when a purple mare and her companions get in the way of the Organization's goals, so will begin another clash of Light and Darkness.

(Crossover due to its plot design; no Sora, no Mickey, just ponies)

Other side of the story: Somepony

This story is a sequel to The Three Sisters: Extended Family

A story of The Three Sisters Universe

Families are like fudge — mostly sweet with a few nuts. ~ Unknown Author

Chrysalis' daughters are serving their community service in Ponyville. Nothing can go wrong. Right?

Unless they all have their own agenda, and surprises keep piling up, complicating matters further. But anything to broker peace between the Changeling Nation and Equestria... right?

Art by the incomparable Conicer!

Now with a TV Tropes page! Warning: Will Contain spoilers.

This story is a sequel to Shard: Settling In

When a strange stone is found at the Cloudsdale weather factory, the heroes travel there to see if it is one of The Elements of Harmony. Unfortunately, there is a pony who is not to happy with one of them, a fact that King Sombra is more than willing to take advantage of.