Celestia, the Lightbringer.
Luna, Mistress of the Night.
Twilight Sparkle, Master of Magic.
Cadance, Princess of Love.

Of the Four Princesses, Cadance is the one that ponies think they understand the most. After all, what could be so hard about being Princess of Love?

A lot of things, actually.

The first story in the Four Princesses, Four Demons series. Sequels are Celestia the Indomitable, Twilight the Triumphant, and Luna the Faithful.

Featured from 1-26-21 to 1-29-21, all thanks to the kind folks of this site, who even pushed it to the #2 spot.

Spike has always felt like an outsider in his own group of friends. And after learning what happened to Stygian, Spike realizes how dangerous he could be to his friends in the future. This leads him down a very dark thought spiral: he should kill himself before he ever even has the chance of hurting anyone else.

Prereading and editing by Soge and Fluttershy

Criticism of “Just a Thought” by Chinchillax’s inner critics:

What is WRONG with you!?
—My conscious

You really shouldn’t put your mental health problems on parade for everyone to see.
—My anxiety

You really should learn to write someday.
—My inner editor

The star system Omega Centauri was just another oddity on a map to scientists in the not too distant future. However when they found the star was orbiting an earth-sized, earth-like planet instead of a black hole as its motion had suggested, a mission was scrambled to investigate this most unusual of celestial behaviors.

Hamstrung by politics, and nearly crippled before it began, the 'Lone Ranger' mission was reduced to just one crew member and left to his own devices.

These are the logs of Arrow 18 and its lone commander. This information is classified TOP SECRET by the Global Space Agency.

Do NOT tell the princess.

Being a princess is stressful, but your peers and friends can certainly help.

That was what Twilight had in mind when she invited Luna over for tea one afternoon. A relaxing, friendly meeting between two fellow princesses where they can commiserate and share their experiences. An invitation to a stronger friendship than they had before, offered to a pony displaced in time.

What she got was an uncomfortable assertion about her relationship with her number one assistant, Spike. One that she is having difficulty refuting.

Ponyville, Equestria. Population 5000.

Fallow Meadows, Indiana. Population 8000.

Two towns, two species, two worlds.

But worlds will collide when both are hit by mysterious storms that transport them to a third world unknown to either. Trapped in a place hostile to them both, can human and pony learn to work together? Well, yeah, the story wouldn't be called Unity otherwise.

The real question is what happens when it turns out that they are not alone...

April, YOH 1505 (almost 5 years after Luna's Return): Twilight Sparkle and her Companions defeated Starlight Glimmer at Our Town, and return to Ponyville. But though they are victorious, they bear battle-scars on their souls -- and they know that the mad mage is still out there, doubtless lusting for revenge. Sometimes, mere victory is not enough.

Takes place between S501-02 The Cutie Map and S5E03 "Castle, Sweet Castle."

Set in the Optimalverse, a middle-aged woman enamored of 'Equestria Online' confronts what permanent emigration to Equestria - uploading to a virtual existence - really means... but can she even hope to truly understand such a thing - and more importantly, can she trust the artificial intelligence known as 'Celestia'?

♥ As Horrified Eliezer Yudkowsky!

Nothing foils a good plan for revenge like having your plot explained to your target, and then being forced to spend time with said target without murdering them.

This is a lesson Chrysalis will learn during one of the strangest days of her life, courtesy of an insane (or possibly just inane) draconequus.

As for Starlight, well, it's not like she was doing anything. What's a guidance counselor in a school of friends even do? Honestly.

TL;DR Discord tries to forcibly ship Starlight Glimmer and Chrysalis.

Now has sequelitis! https://www.fimfiction.net/story/411966/discord-vs-harmony-the-greeting-card-industry-strikes-back

“I ain’t just a farmer anymore and you ain’t just a fashion designer anymore. Now we’ve got new titles.” She placed a hoof on her chest. “Element of Honesty...” -- she moved her hoof to Rarity -- “and Element of Generosity. Saviors of Equestria and whatnot.”

When Applejack was a filly, she'd been told a hundred times by her parents that she was special. This... this isn't what she expected.

This story is a sequel to Hard Reset

This is a followup story of Hard Reset, and talks about the experience of living in a loop from a more "slice of life" point of view, rather than adventures all the time. The original story ended several months after the reset point,‭ ‬and mentions the possibility that the time magic is still potent.‭ ‬The author feels like this is an important point that requires expansion.‭ ‬In fact,‭ ‬this is the most important point.

In this story, Twilight goes through her cyclic lives in a desperate and somewhat comedic search for meaning, but mostly just to avoid going mad from boredom.