This story is a sequel to A Stitch in Time

Having discovered the message left for her by Star Swirl the Bearded in the distant past, Twilight once again finds herself caught up in the middle of a struggle against forces far greater than herself. In order to even stand a chance she'll need to travel further and wider than she ever has, and forge some unlikely alliances with old enemies. All to bring down the powers that have manipulated and shaped her entire life, and retake control of her own future.

The conclusion of the Time Loop Trilogy, which began with Hard Reset
Available in Spanish thanks to dgs1993
Series TV Tropes page

Centuries after most of her friends have all passed away, Twilight decides to make one last trip into the past. No interacting, no greeting deceased friends, no reunion with her beloved marefriend. Just one quick glance at a life long lost.

However, for better or worse, she'll end up getting much, much more than that.

This story has a prequel entitled The Last Train Home.
Cover art by Swan Song

After the most important night of her career is ruined and its saboteurs not even so much as punished, Octavia's life changes. She begins to pursue a path that has never been seen before in Canterlot, where concertos and rhapsodies give way to controversy and rebellion.

A path where symphonies are composed with cans of spray paint.

Cover art used with permission by LuGiAdriel14

Sunset Shimmer is having the worst day of her life. She used to be important. She was the personal student of Princess Celestia. She was a future leader of Equestria. She was the kind of mare that everypony envied.

Today, it's all crashing down around her.

Alternate Universe: What if Sunset Shimmer hadn't gone through the mirror?

This story is a sequel to The Age of Wings and Steel

Tyria Metrel, an ensign assigned to the Equestrian embassy in the island city of Zyre, has her hooves full dealing with pirates and bad-tempered politicians. On top of that, a new ambassador named Rye Strudel has arrived on a mission from Princess Celestia, and he might well be the strangest pony she's ever met. Ambassador Strudel is a pegacorn, one of the rare crossbreeds unable to fly or do magic, but Tyria soon learns that his disabilities don't prevent the ambassador from getting himself into deep trouble.

Rye's cheerful curiosity and drive begin to stir up feelings Tyria thought she'd given up on—when he's not making her tear her mane out in frustration. After the two of them stumble upon a treasonous plot to seize control of Zyre, they'll have to work together to foil an old enemy, save the city, and maybe even find love along the way...

... provided they don't drive each other crazy, first.

Three hundred years after the fall of Princess Luna, Equestria teeters on the brink of disaster. Bitter political infighting and power-hungry nobles threaten to tear the country apart in a bloody civil war, while in the south old enemies prepare to reclaim their ancient homeland from the ponies.

As Princess Celestia desperately strives to hold together her splintered nation, she sends a young pony on a quest to the northern lands that border Equestria in order to plead for aid against the threat of Grypha. This unlikely messenger is Rye Strudel, the flightless, magicless, half-breed son of a guard and a baker. Rye must do the impossible and unite the thanes of the north... for if he cannot, there may be no home to come back to.

The wheel of time turns, as destiny and history clash together.

Fifty years into the future, Sunset Shimmer is Princess Twilight Sparkle's most faithful student. She is smart and eager, but doesn't always think things through. Her life had been perfect, right up to the End of the World.

With a ruined future, Sunset travels into the past to alter the course of history. With only her mentor's cryptic word to go on, Sunset and the Elements of Harmony must solve the riddle of the Dark Regalia and stop the mysterious Vesper Radiance from rising to power. But the further Sunset goes, the more she feels like she's been through it all before.

Is destiny set in stone, or can Sunset shape her own future? Only time will tell.

Featured on Equestria Daily 6/16/13
Gratefully edited by JustAnotherTimeLord, Icarus_Gizmo, Cerulean Voice and Bad_Seed_72

The Sunset of Tropes page!

Be Awed and Amazed by the tale of Sweetie Belle as she traverses the multiverse in search of her lost mentor and friend, Twilight Sparkle! Will she find her in post-apocalyptic Equestria? Or maybe in a strange world where everypony is the wrong gender? Or even where a Pony claims to be a human? Read as she journeys through very familiar worlds you might have read about... if you dare!

At this point in time all the main worlds to be visited have already been chosen. Thank you all for the suggestions, and I hope you enjoy the surprises!

Here's the official TSC:F Music Intro: The Sweetie Chronicles: Fragments

WDTP: S2/3-CE
You can also visit the TV Tropes Page which has spoilers!

Dust and Harmony is a familiar story re-imagined in a western world called Dust.

This story is a sequel to The Best Night Ever

Final Arc - The Black Wedding
CH63 - If I Had a Heart
- The ponies of the Fourth Tribe are ascendant. Shining Armor hunts down his changeling "daughters," and even Lady Antimony won't get in his way. Meanwhile, high above the burning city of Canterlot, a long awaited reunion occurs, and Twilight confronts Alpha Brass and makes a final decision.

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It began with a mare from Ponyville and a time-looping Prince from Canterlot. This most unlikely union now stands at a crossroads: a ruthless changeling invasion; a conspiracy within the highest circles of the Equestrian aristocracy; a half dozen power hungry noblemares looking to become a Princess in all but name. With the prize of Canterlot and its Platinum Crown at stake, it falls to six Elements of Harmony to once again save not just Ponyville, but all of Equestria.

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TVtropes page is here: link

The prequel to TPC, "The Best Night Ever" is here. link
The side-story crossover with "Sweetie Belle Chronicles" is here. link

Someone out there made a playlist for Platinum Crown: Rarity, Blueblood and Chrysalis. Pretty sweet!
Wish I knew who, or even when they did it, though. I especially like the Chrysy playlist.
https://8tracks.com/explore/this_platinum_crown/hot/1

I've gotten some cool TPC related art done, too.
So Sweet and Tasty's TPC Cover Art
link
Thanks to Madmax for these two:
Rarity, Blueblood and Antimony
link
Dash and Ritterkreuz
link
The Terre Rare Founder - Lady Arsenic
link
Twilight and Alpha Brass Battle Duet
link