Once upon a time, Spike went for a walk.

While on his walk, he was judged by an ancient alicorn, lodged with griffons, parlayed with air pirates, charmed a maiden of a mystical race, and dealt with the scourges of hate, fear, and racism while deliberately drawing the armies of myriad nations to the brink of global war.

Once upon a time, Spike went for a walk, and did all of this so that he could keep a promise to the one that meant the most to him... Twilight Sparkle.

In the first of three books, Pillars of the Sun (Chapters 1-15), Spike is devastated by Twilight's fate and grows more and more despondent as he attempts to understand what has happened to his dearest friend. A gentle nudge from a pony he trusts sends him looking for answers. When that nudge becomes a push he unravels ancient secrets... and risks losing himself before his attempt to rescue Twilight can even begin.

Lyra, a simple pony with simple dreams. Dreams involving aliens, that is. Her fascination with them even got her a job dealing with them, though no one takes it seriously. Lyra hopes to one day be able to meet one, she just needs to believe.

In comes a human, whom mysteriously gets transported to Equestria. It's up to Lyra to show the alien the ways of her people! The power of friendship, magic, and hugs await her on this strange adventure.

This story is a sequel to Celestia Sleeps In

After the accidental discovery of humans, Celestia tasked Lyra with learning about Dale's culture and Dale's language. Two meetings later, a misunderstanding caused Dale and a Coast Guard woman to be inadvertently transported to Equestria. With the two humans hospitalized and communication limited at best, the Equestrians just want to heal them, while back on earth the Coast Guard wants nothing more than to determine what happened to one of their sailors.

Being a cowboy is usually very straightforward. Frank, however, finds himself in over his head when he meets a unicorn - a very whiny, needy unicorn with a compulsive need to be fabulous and an unexpected knack for gunslinging.

In a world where nothing comes easy and everything is incredibly dirty, a man and a pony are going to have to rely on each other to make it through.

After an argument with Luna, Celestia realizes that she is the only creature in Equestria who cannot sleep in. She enlists Twilight to help, and the two of them come up with a spell that will allow her to spend the night on a different world. Unfortunately, all their research failed to reveal that the world they sought was populated. Now, the Princess must decide whether to continue with contact, or destroy the only non-Equestrian witness to their existence.

Cover art is called "Sleeping Celestia" by Briskby

There is a secret in Equestria. A secret the newly crowned Princess Twilight Sparkle doesn’t dare to believe. Like puppeteers pulling on marionettes, they have influenced Equestria for better and worse since the fall of Discord. So far they have been benevolent, but their potential for evil is vast. What’s worse, she doesn’t know their name. She doesn’t know their mission. All she knows for certain is one thing.

That they all seem to be zebra.

A changeling who finds responsibility thrust upon her after the failed Canterlot invasion.

A unicorn who finds herself part of first contact with a strange new creature.

A princess who finds hints of one she long since lost in another's mind.

With the arrival of a strange bipedal creature into Equestria, all three will find themselves intertwined with the fate of the girl. When language cannot be understood how will communication with the new arrival be achieved, and what secrets may the creature be bringing with her? What does the girl possess that may alter how the changeling in particular sees the world.

What could the girl possibly have that would allow one word – hope – to resonate so strongly, not only for herself but also the changeling.

This is a retelling of A Voice Among the Strangers from three viewpoints in particular. You don't have to read AVAtS to read this one, as I will be attempting to make each a full story on their own.

Also, this seems to share a Tv Tropes page with A Voice Among the Strangers!

(Thanks again to Tulip for the Cover image!)

This story is a sequel to Lyra's Human

Several years after the events of Lyra's Human, Derpy Hooves decides that she's lonely, and wants to meet a human for herself. Together, Derpy and the human have crazy adventures across worlds as both learn what it means to be true friends.

Story image courtesy Shadow Squirrel

After the Changeling invasion, Celestia and Luna make the decision to have Twilight investigate the Elements of Harmony and solve the mystery of their power.

A thousand years later, Rainbow Dash awakens in a world she does not recognize. She has no idea how or why she came to be there. She does not know the language, the geography or any of the rules of this new time. She soon finds allies in Star Fall, a scholarly pegasus whose Talent is Magic, and Astrid, Star Fall's Griffin guardian. Together they set out to discover why Dash has been sent to the future, and how she might return to when she belongs.

War threatens the nations, a Nightmare stalks the shadows, and Rainbow Dash's arrival has turned her into a wild card in a deadly game that pits the law on both sides of a broken Equestria against a mysterious criminal figure, Max Cash. Yet the stakes are higher than anyone knows, for in her research Twilight Sparkle discovered a dark secret about the Elements, something that will shake the foundations of the world.

Cover image by SierraEx
Has a TvTropes page