Daring Do cannot believe her luck when she is asked to help explore the most ancient tomb known to ponykind. But terrible danger awaits her, for beneath the earth rests something beyond equine understanding.

Warning: comments contain ending spoilers.

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Alternate ending by Duplex Fields.
Archived in the Pony Fiction Vault.
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Anon likes his life to be simple. He wakes up, goes to work and sometimes gets himself a good book to read while he is home. It's a routine that he likes to follow, it makes him feel like he has a bit of normality with his life in Equestria. The fact that having Celestia come crashing into his home as part of his routine should prove that his life is anything but normal.

(Thanks to PeerImagination for editing!)

Celestia is trapped on Earth.
Not as a human. Not as an alicorn. She's a common horse, an Arabian mare, without her magic, voice, knowledge of the language - not even freedom, forced to work at a riding school.

What can a single Arabian mare do to get back to Equestria from this backwater European country? With only the mind of a princess and a pencil in her teeth, Celestia must find a way home.

[Illustrated] [Alternate Earth] (without Bronies)
Rated Teen for language and some scarce suggestive themes.
Proofreading by AlicornPriest

Polish language version

It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony

Early one morning, Twilight Sparkle gets up to make some tea.

Sometimes, a cup of tea is just a cup of tea. This is not one of those times.

"When you arise in the morning, think of what a precious privilege it is to be alive - to breathe, to think, to enjoy, to love." - Marcus Aurelius

Another day, another dawn, another morning. For Celestia, time is a road that goes on past the horizon. But she will endure.

This story is a sequel to Decretum

Almost a decade after his parents vanished in the war with Clockwork World, Antares Mirus is finally ready to try and find his parents, to save them as they saved him. But his plans are interrupted when a psychotic force of destruction rises out of dormancy, targeting first Ponyville... and then the unfortunate Antares himself. Seventh story in the Blooming Moon Chronicles/99 Worlds Saga.

This story is a sequel to Yaerfaerda

A newly transformed Rainbow Dash continues her flight east.