This story is a sequel to Hard Reset

After the events of Hard Reset Twilight's life and mental well being are slowly returning to normal. Her recovery is cut short, though, when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself. In over her head, Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be.

Available in Spanish thanks to dgs1993
Series TV Tropes page

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

Mood Wings - Observations on Pegasus Body Language.

When Twilight Sparkle finds this book, she discovers an entirely new field of research. The secrets of pegasus wings lie before her, and she insists on making her own observations on the matter.

How?

Field research, of course.

(This story is sci-fi, and somewhat different to regular FIM stories.)
Aneki's world was small. It was spherical, and it only took a day to gallop from one side to the other. She had been taught nothing existed outside the sphere, but she wasn't so sure about that. Perhaps her world was a bottle, a container in which ponies had fled to live. A time would come when she gained the opportunity to investigate these things first hoof, if she lived that long.

Warning: Silliness inbound.

By order of the high lords of Terra themselves, a lone soldier from the Death Korps of Krieg has been sent to the planet Epona to wipe out its Xeno population. Starting with Equestria, the Korpsman has sworn not to leave the planet until he falls or completes his mission.

However, no Korpsman should fight without setting up a proper trench first, and so the Korpsman must dig...and dig...and dig.

Destroying Equestria is going to take a while.

Rainbow Dash, best pony, fastest flier in Equestria, all around awesome mare, was called upon to help with the wedding of her friend's big brother. And hey, she never leaves her friends hanging! Of course, when it turned out some kind of bug thing had replaced the bride, Rainbow was more then ready to fight. Heck, even after it seemed all hope was lost, the pegasus refused to give up.

So when she saw Shining Armor charge up a final spell, she smirked.

But when that spell reached her and flung her against the wall, her smirk devolved into shock...

Cover art is a combination of Deception is Magic vector by Helios and Sonic Rainboom Version One by SkyRings.

It's a perfect day in the life of Twilight Sparkle. Ponyville's chief librarian has everything she wants: her books, her studies, a faithful dragon assistant, and the opportunity to go visit Sugarcube Corner on a beautiful afternoon, hanging out with the best friends that a young unicorn could ever ask for.

And yet, in spite of all this, Twilight has the distinct feeling that something is missing...

Octavia and Vinyl have been dating for months, but neither has had a chance to introduce their significant other to their families. Vinyl always dodges the issue, but when Octavia is insistent, they have a fight. This leaves Vinyl with no other option than to have Octavia over to meet her parents.

Maybe she should have told Octavia who she really was?

Dramatic reading by Goombasa available here.

Now in Russian, translated by Hopeless.

At first glance, Princess Luna's charioteers might appear to be little more than Royal Guards dressed in festive apparel for Nightmare Night. However, there is far more to the story than that - the Night Guards once played a pivotal role in the history of Equestria, and have sacrificed more for their beloved princess than most ponies are even aware of.

This story is a sequel to Change of Life

Dandelion is a pegasus filly, Cogs and Lavender's firstborn daughter, and a joy to them both. As a changeling though, Cogs had no experience with raising pony foals, so when a crisis arises, he often has to wing it. Sometimes the solutions are more creative than others, and sometimes the problems are unique. After all, how many fillies have a changeling parent?

This is a series of stories that are sequels to "Change of Life" and takes up after chapter 10 (Foals).