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

Harry Dresden, Chicago's only professional wizard, accidentally travels to Equestria after being attacked in the Nevernever. Twilight is none too amused with their newest 'guest', but trouble is brewing. Somepony is planning something sinister and the mane six may need Dresden's help however little some of them want it.

Story Image by: Lynxgriffin
Cover arrangement by: Novel Idea

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)

Twenty-five years later, Apple Bloom is an adult pony. She's married with two lovely foals, and is the respected mayor of Ponyville. However she never got past the heartbreak she felt when her two best friends moved away all those years ago.

All this is about to change though. Tonight is the first Ponyville school reunion and Apple Bloom is determined to finally put the past to rest and have the best night ever. What could possibly go wrong?

Cutie Mark Crusader School Reunion go!

There's a new pony in Ponyville. She's perfect in every way. She's kind, fast, strong, beautiful, and is loved by virtually every pony she meets. But something seems off to Twilight. Something seems wrong. Very wrong... What horrible secret will she uncover?

After Rainbow Dash's rump meets lightning one time too many, she feels like her reputation in town is ruined as ponies start laughing at her misfortune. Her self-esteem in tatters and her loyalty waning, its up to her friends to help her. Please review!

12/22/11 EDIT: Updated with corrections, revisions and an added scene in Chapter 11

Humans.

Truth or myth? Ancient lost civilization or just an old pony's tale?

No pony has ever seen one, and most haven't even heard of them. But Lyra knows that these wonderful creatures are more than just old legends, and she's going to find out... and possibly drive her roommate insane in the process.

[Complete!] When Rainbow Dash crashes into the library one too many times, Twilight ends up becoming her coach for the upcoming Best Young Flier Competition. But Rainbow Dash wants more, and relationships are never as perfect as they seem.

Twilight is invited to Canterlot to compete with some of the greatest magicians in the world for the Moonstone Cup, a prestigious award for the most powerful and skillful magicians, unicorn and otherwise. Can she win? What sort of competition will she face?

Awesome cover image was taken from NoOneBahtim

A direct continuation of '27 Ounces: A Tale of Eight And One Half Ponies', the lives of a family of newfoals from their very first arrival in Equestria is followed. Join Caprice, Alexi, Pumpkin and Buttermilk in their day-to-day lives as they adapt not only to being humans-turned-Equestrian, but struggle to help found a new village in the ever expanding Exponential Lands. This is a story of courage, survival, and the process of bringing a new landscape under proper Equestrian dominion. Starting without weather, shelter, or any understanding, these brave newfoal pioneers face daunting odds.

Knowledge of the previous novel is not needed to enjoy this tale.

♥ As Featured On Equestria Daily!