Fluttershy gets more than she asked for when she visits the Library and hears moaning from behind the door. Concerned that Twilight may have developed a problem, Rarity and Rainbow Dash go and investigate.

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

Anything is Possible in Twilight's Lab

Twilight Sparkle has the best friends a pony could ask for, and her stay in Ponyville has allowed her to spend plenty of time with all of them. But when one of her friends begins to see her as more than just a companion, will she be able notice the hints? Or will she break her admirer's heart and pit friend against friend without even realizing it?

If you like this story, check out its sequel: Two Paths.

Vinyl Scratch has it good.
As one of Canterlot's only dubstep artists, she's a breath of fresh air in a backbiting industry of classical music.
Her best friend Octavia, however, doesn't have it so good.

Rated T for mention of some not-so-SFW stuff.

Things have been going well for Sunset Shimmer since the Friendship Games. She's on good terms with the students at Canterlot High School, she has a close circle of friends she can depend on, and most of all, she now has a new friend and research partner in the form of the human world's Twilight Sparkle. With a brand new avenue in magical research now open to her, not even the prospect of her upcoming birthday can get in the way of her hope for the future.

Then her latest experiment blew up in her face.

Reduced to a mare in a child's body, Sunset has to find a way to reverse what she's done and return to what qualifies as normal in this world. But in a world where magic was a fairy tale until a few months ago, things are going to be more than a little difficult on that front. And as she struggles to maintain her adult mind against the immaturity of her current form, her friends are faced with the possibility that they may lose their friend forever.

Sunset Shimmer spends a quiet, ordinary afternoon and evening at home.

Set in the Equestria Girls universe!

When Twilight Sparkle (the scientist one, not the otherdimensional pony princess) predicts an oncoming magical calamity, it's up to Sunset Shimmer and her friends to stop it!

Now, they've got just two days to cover hundreds and hundreds of miles to get to exactly where the dimensional incursion is going to take place.

Good thing it's Spring Break. Road Trip!

Twilight has been having her study sessions with the Cutie Mark Crusaders for some time, and has been remarkably pleased with their progress. And kind of worried, as they keep getting better and better. She might be a princess now, but TEACHING THE CUTIE MARK CRUSADERS? She'd rather not become their formal mentor. Yet.

A letter is sent out, and Princess Celestia gets a call for help. And, an opportunity is born. After all, why not? After a thousand years, perhaps it is time to do something else, just for a bit. She does have a rather wonderful younger sister who hasn't been ruling a land for a thousand years, and who has been studying how to rule for the past four rather intensely. So, teaching three fillies undercover? Sounds like fun.

And Luna. She's wanted to be as respected as her sister so much that she once went mad over it. But now, she's simply being handed the power that she once coveted for so long and no longer wants. What kind of a world does she live in now that her highest desire has been so casually granted?

With all of this, What Could Possibly Go Wrong?

Arcs:

Escape: When Celestia hears the call, she jumps at the chance to teach again, especially three fillies who might surpass her grandest student. But first she's got to escape her own identity...
Examination: So you want to find out what a filly does? Time to test her silly, so long as you don't taunt the Happy-Fun Filly.
Excitement: So, you've found the Happy-Fun Filly. Great, but the other two need help as well, and Scootaloo has this ~Great!~ idea for how to use her new-found magic...
Encouragement: Cometh the Bubbles, and a whole load of new headaches as they find out just what being a Happy-Fun Filly really means...
Exaltation: Where's Luna been this whole time? She can't be very happy about being left in the lurch holding Equestria. She could really use somepony to talk to.
Exercise: 'Sunbeam' is looking to teach the Happy-Fun Filly more, but first she needs to start taking care of the wagon-tire she keeps around her middle so that certain Unfun-Time Fillies don't interrupt her. And there's this big draft stallion looking for help...

Luna has always been the watcher of dreams for her ponies, and caretaker of their private fears. Over time, she has come to see many of the ponies of Equestria feel oppressed and downtrodden, and yet she can find no reason for it. Everything is perfect in Equestria. Or so it seems until Luna discovers a secret history Celestia has tried to bury - along with a series of philosophical manuscripts and political manifestos.

Apple Bloom is one of the many ponies feeling trapped in her life, and this manifests itself in her dreams. Luna, inspired by the ancient philosophies from Celestia's forbidden library helps Apple Bloom through her problems by taking her on as a student. Apple Bloom, true to form, decides to share these ideas with her friends.

Little do they know the repercussions...

Something I've been dabbling in for the last few months. First pony fic, and - quite frankly - it's rather unrefined. Mostly me exploring philosophy from pony's points of view. I don't know if the Lunar Republic and Solar Empire are "fanon" material with their own respective histories, so I just made my own rather than research it. Sorry to any fans of that AU if I've stepped on toes. Also, I'm trying to keep this politically neutral; that is, I'm not trying to make the Republic or Empire, or their respective philosophies, the "good guys" of the story. Think of this as a crack fic, if it helps.

This fic centers on the rise of the Lunar Republic and its secession from Equestria. I plan on making a sequel fic which focuses on Celestia's transition into Empress of the Solar Empire, probably lamely titled "The Empire". Anyway, tell me what you think. Really let me have it. Also, I wasn't sure what category to put this in; it's not really dark, but it's not much else either. Any tips there would be appreciated.