A noble earth-pony family, fallen somewhat on hard times, is killed in a mining accident. They leave behind a single male heir, who is in sore need of a guardian, and of protection. Celestia takes the young pony under her wing and delivers him not to ponies - not earth, unicorn or pegasus - but to a dragon, an ambassador, an old friend of hers.

Playing a game which may just be deadly to the uninformed, the dragon decides that the one path open to him to ensure the safety of his charge and to carry out his sworn duty, is to adopt.

Rainbow Dash is dead.

Scootaloo knows this, but that does not mean she will accept it. Equestria is a land of magic and hope—what is one more miracle among hundreds? This is the question that drives her forward when she stumbles upon a Daring Do book that seemingly shows her a means of bringing back the dead. Driven by painful memories and a desperation to make up for her own mistakes, Scootaloo ventures on a quest to bring her fallen idol back to the land of the living. Embarking on a journey far from the world they know, Scootaloo and her friends find the line between fact and fiction—reality and delusion—blurring with each step.

Originally envisioned and published in 2012. Resurrected in 2019. Be wary of potential spoilers in the comments

Cover by the awesome and talented Conicer

The Mane-Event, a popular stage show in Manehattan, has acquired a rare creature they intend to use as part of a new act. Their typical animal handlers prove inadequate for the new job so they invite Equestria's best to be the caretaker-- Fluttershy. Moving to a new city requires the inconvenience of finding a new place to stay, however. What fortune that Trixie, one of the primary acts of the Mane-Event, just so happens to have free space at her apartment.

And then the Element of Kindness lived with the Element of Egotism.

Celestia and Luna were born as unassuming foals in troubled times. But already marked for greatness, the simple earth ponies stand to face a world set against them, full of danger, fear, and sadness. A world they will change forever.

A sweeping epic taking place before Equestria was made, where Celestia and Luna must rise from normal foals to become the Princesses we know them as, beset from all sides by monsters, other ponies, and even the forces that govern nature. Their tale is as tragic as it is triumphant.

Currently on hiatus. For more info, go here.

(Cover and internal art by Madmax)
(Editing credit predominantly Lightside Luc)

Luna finds out about Pip's life, and decides to adopt him. This leads to her going to Ponyville much more often, and seeing more familiar faces. Feelings that she can't explain begins to develop in her.

Twilight is disturbed by an odd visitor. Where's Pinkie? What in Equestria is happening to Ponyville? Why can't Twilight seem to do anything without injuring herself?

I've no idea what I'm doing.

Set in the far future after Celestia and Luna mysteriously vanished and the sun and moon froze in the sky, Antipodes is the story of two ponies thrust out into the harsh new world on an adventure to uncover what happened to the world so long ago.

(I wrote this when I was 17. it's pretty rough in places, but i think the basic ideas i had here were pretty cool. it's got a good skeleton)

Spanish translation here: https://www.deviantart.com/spaniard-kiwi/art/Antipodas-1-3-953524835

After her students release the spirit of Discord on an official field trip, Cheerilee finds herself out of a job. With no opportunities in Ponyville, the schoolmare takes a job offer in the inner city area of Canterlot's old mining town. Can even she overcome the insanities of her colleagues and apathy of her students in time to pass her next annual review? And who is the mysterious backwards-talking filly following Cheerilee around? Luna's School for Disadvantaged Youngsters will never be the same!

Tv Tropes page can be found here.
Cover art based on work by blackgryph0n, used with permissiom.

Spike only wants things to stay the same. Time, however, has other ideas. He's going to need a lot of help... An everypony story.

(Cover image by Rannva)

While on a camping trip, Twilight Sparkle and her friends decide to investigate a mysterious meteorite- and find an unexpected visitor came along with it! (G1 Transformers/FiM crossover!)

Cover image (and inspiration) by Bingodingo! http://bingodingo.deviantart.com