As you walk through Ponyville, the first ponies you notice are the ones that really stand out. Namely, the mane six. But every time you saw that pony brushing past you or singing in the chorus or sitting in the crowd, it was one of us. One of the background.
A fic centering around the background mane six: Doctor Whooves, Vinyl Scratch, Lyra Heartstrings, Bon Bon Sweetie Drops, Derpy Hooves, and Octavia.
Doctor Whooves as Twilight Sparkle
Derpy Hooves as Pinkie Pie
Vinyl Scratch as Rainbow Dash
Octavia as Rarity
Lyra Heartstrings as Applejack
Bon Bon Sweetie Drops as Fluttershy
And Roseluck Tyler as Spike the Dragon

Special Thanks to:
ThunderChaserCreate
SkyStorm
eXtaticus

For most of Applejack's life, she didn't know what she was. True, she understood who she was well enough.
But ponies don't change shapes, nor do they get strength from love.
Applejack never thought too hard on it... until the events of a certain wedding brought about some harsh realizations.
Now, with Equestria still reeling from the surprise attack, will Applejack manage to come to terms with what she is? Will she even be able to keep her secret safe?
For if the royal guards don't get her first, the conspirators in the shadows just might...

Image provided by Heilos -

This story is a sequel to My Little Changeling: Friendship is Weird

After the most important changeling artifact, the Evershifting Stone, is stolen by ponies, one changeling is blamed and exiled. How can he earn back his place in the hive? Find the thief and bring back the Stone.

He tracks the thieves all the way to Canterlot, which has changed a surprising amount in the past year and a half. Can he really find a thief among the confusing mess that is pony life and changeling integration?

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Cover image graciously provided by Raster!
Found on Equestria Daily here!

This story is a sequel to Thrown Abroad

After the events of Thrown Abroad, Suncloak the changeling is happily living in Ponyville. Well, sort of. He needs the love of friendship to stay alive! Luckily, there's plenty of ponies who would want to be friends with him. But let's not forget about other changelings here...

You know, this would be a lot easier if the whole concept of friendship wasn't so needlessly difficult.

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Amazing cover art by Wolfeh! Find her Tumblr here!
Fanart!
To be found on Equestria Daily here!

A single changeling is blamed for making Chrysalis' plan to take over Equestria fail. He's banished and thrown out of the hive, ending up somewhere far away.

Luckily, he ends up not too far from a certain well-known village, where he can feed to his heart's content.

Needless to say, not everything goes according to plan.

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Now with a French version, courtesy of Wansdich, here.
Fanart! Check it out here. And even more here!
Now in ereader-friendly PDF version, by Starflower Hooves! You can view and download it here.
Featured on Equestria Daily!

Several weeks after recovering her crown from Sunset Shimmer, Twilight Sparkle discovers she can communicate with her counterpart from the other world, who has finally arrived at Canterlot High. When Celestia theorizes that the portal can be re-opened, Twilight and her friends--as well as the OTHER Twilight and HER friends--decide to trade places, so they can learn more about each others' worlds. The only catch: neither party can return to their own world for a full thirty moons...

This story is now cancelled. Its concepts will (eventually) be retooled into (Mis)taken Identity.

Gabby goes to a boarding school in the middle of wheat fields. She enjoys the school life there and meets another new girl in the dorm. Gabby assumes she is a brony because of the way she acts and dresses like one of the characters in the show. Lyra Heartstrings is that background pony from Equestria.

Cover art by kvoakes17.

This story is a sequel to Where Loyalties Lie: Honor Guard

After risking her own life in a daring adventure across the world to save Princess Luna, Rainbow Dash wants nothing more than for her life to return to normal. In her mind, what happened is in the past, and she wants nothing more to do with it. But a past abandoned is doomed to be repeated, and with an ancient threat rising beneath the snows, Rainbow may be the only mare who can truly save Equestria.

A Price of Loyalty story.
No longer canon to the 'PoL' universe; see author's note on chapter 1.

"Equestria's Guard: the Bravest and the Best. Do you have what it takes?"

So the advertisements say. When Rainbow Dash saves the life of Princess Luna, however, she quickly comes to learn that there's a lot more to the guard than what everypony knows. As she faces down threats to her friends, her Princesses, and her country, Rainbow will have to decide exactly who she is loyal to.

A Price of Loyalty story.

After the Changeling invasion, Celestia and Luna make the decision to have Twilight investigate the Elements of Harmony and solve the mystery of their power.

A thousand years later, Rainbow Dash awakens in a world she does not recognize. She has no idea how or why she came to be there. She does not know the language, the geography or any of the rules of this new time. She soon finds allies in Star Fall, a scholarly pegasus whose Talent is Magic, and Astrid, Star Fall's Griffin guardian. Together they set out to discover why Dash has been sent to the future, and how she might return to when she belongs.

War threatens the nations, a Nightmare stalks the shadows, and Rainbow Dash's arrival has turned her into a wild card in a deadly game that pits the law on both sides of a broken Equestria against a mysterious criminal figure, Max Cash. Yet the stakes are higher than anyone knows, for in her research Twilight Sparkle discovered a dark secret about the Elements, something that will shake the foundations of the world.

Cover image by SierraEx
Has a TvTropes page