SF (canon species only; no humans) Ponies were magically and genetically engineered to be the perfect servitor race. They are powerful, adaptable, intelligent and completely under the control of their creators. A laboratory accident frees one such pony from her mental chains, but how can one mare save herself and the rest of her kind if she doesn't even know she's a slave?
This is not the Equestria you know and these are not your little ponies... not yet, anyway.

Tags: Adventure, Diamond Dogs, Gryphons, NO HUMANS (did I mention that already?)
Other tags: historical, mind control, Clarke's 3rd Law, excessive use of high energy physics, before they were famous.
Detailed review by PaulAsaran.
Cover art by endrome , used with permission.
Russian translation (partial -- 'unofficially' completed in the comments)
A Soot-Covered World, book 1.

It is the longest day of the year, and something has gone wrong. Canterlot is in ruins, Celestia is an out-of-control god flying west, and it's up to Twilight Sparkle and her friends to save Equestria. But with the Great and Powerful Trixie playing a reckless wild card, do the girls have what it takes to set things right?

A bad day and a rainy night. It’s enough to drive a mare to drink. Winding up in a dark bar on the streets of Canterlot, Rainbow Dash finds herself meeting up with a mare who is elegant, graceful, and totally gorgeous. All the qualities that Dash thinks she completely lacks. What the heck could they have in common?

On this particular night, far more than she might realize.

A collaborative effort between myself and TheLandgrave, told from two perspectives.

To see Fleur's side, click here.

This story is a sequel to Beautiful: Rainbow Dash

A bad day and a rainy night. It’s enough to drive a mare to drink. Winding up in a dark bar on the streets of Canterlot, Fleur de Lis finds herself meeting up with a mare who is young, independent, and totally unbound by societal expectations. Everything Fleur thinks she’s lost. What common ground could they possibly find?

On this particular night, far more than she might realize.

A collaborative effort between myself and Nom_deCheval, told from two perspectives.
Check out Dash's side here.

Twilight's Library Approved

Luna is a happy filly, and wants her sister to be happy too. She doesn't know why Celestia cries at night, so she's going to raise the sun and let her big sister sleep in.

Celestia watches her waiting to raise the sun from inside her chambers, torn between a love that she wants to acknowledge and the machinations of politics that have kept her from doing so.

What would a good sister do?

What would a good mother do?

Proofreading by Minds Eye

Cover Art: Then I Heard Your Heart Beating - Riz Cifra

Featured on Equestria Daily

"Dear Princess Celestia, as your (former) most faithful student, I feel I have to warn you that this is probably a trap. Chrysalis cannot possibly be serious about this. Why would anyone, much less her, want to shoot a documentary on us?"

Chrysalis, queen of all the changeling hives and infinitely cunning architect of their plans to conquer Equestria, has a problem: She knows diddly-squat about ponies. But Chrysalis is cleverer than most—or all—changelings, and she's already devised a brilliant solution to this trifling issue: Make a movie about them.

Tenth place winner in Equestria Daily's Outside Insight contest.

Out on the frontier, the only friend a pony can really trust is the gun in her hoof. Out where the land is wild and the buffalo roam, more than a few ponies have foregone scratching out a living on the farms or mines to seek riches and glory on the wrong side of the law. As a particularly mysterious and valuable cargo heads west on a long train journey, six mares follow with trouble in their wake, each intending to claim the prize for her own.

Also, a lot of ponies get shot.

Edited by: Exuno
Preread by: barbeque
Inspired by the art of: Coin-Trip39
(Make sure you take a look at the cover image full-size! It's fantastic!)

Minuette is determined to have a nice date with a nice stallion, no matter what that takes.

Twilight Sparkle just wants her to stop wreaking havoc on the time-space continuum.

Things get complicated.

Edited by Exuno
Preread by Barbeque

Applejack and Rarity's relationship was never easy, even at the best of times. But their love for one another was constant, an irresistible force, up until one day when it was no longer enough.

Years have passed since then, and on one quiet night, their paths cross once again.

Cover image by White Diamonds via rarijack-daily
Edited by Exuno

What sort of mare would turn down the chance to help a friend? Twilight's been there for me so many times in the past, but now she's a princess with all the new obligations and duties that come with that. The transition... hasn't been an entirely smooth one. Who better to lend her a helping hoof and show her how one deals with nobles, courts, and politics than moi?

I only hope it doesn't end up costing one of us our sanity along the way.