This story is a sequel to Princess Flurry Heart Versus the Mud Monsters

The Crystal Cotillion. Hobnobbing aristocrats, snooty nobles, and the upper crust of the upper crust. This strange and unfamiliar battlefield is where Flurry Heart finds herself fighting a war that she doesn't understand. Thankfully, she is not alone and there are allies who will come to her aid.

A crazed Vizard, Professor Egghead, and a perverted earth pony filly: these three are her only hope, her only chance at being free. Her enemies are many, including most of the aristocrats in attendance (whose views on society are one-thousand years out of date) and her younger sister, bratty little Princess Goody Fourshoes.

An entry in the Weedverse.

This story is a sequel to The Cadenza Prophecies

Princess Flurry Heart inherited her mother's beauty and grace as well as her father's strength and bravery. The Empire couldn't hope for a better or more suitable heir to the Crystal Throne. Everypony in Equestria admires her and thinks she will be an ideal ruler.

They're wrong.

Young Flurry Heart has no interest at all in being a prim and proper princess, and would much rather have wild and dangerous adventures like her Aunt Twilight.

Book 5 of the Alicorn Adventure series.

This story is a sequel to The Luna Cypher

Twilight sets out to learn more of the ways of the world, and soon decides that the whole planet is disorganized, insanely dangerous, and desperately needs to be fixed. And she's just the mare to do it... with a little help from her friends.

Also, there are sky-pirates!

Book 3 of the Alicorn Adventure series.

A few extra, slice-o-life chapters are here: On the Rocks

This story is a sequel to The Celestia Code

When the monsters created by the dark crystal engine escape their prison, it's up to Princess Twilight Sparkle to deal with them. She gets help and advice from Princess Luna, but things don't go as planned. In fact, when a pony who relies on logic and rationality tries to navigate the stormy seas of emotional entanglement while simultaneously saving Equestria from a horde of evil creatures intent on destroying everything they encounter, nothing goes as planned.
AUDIOBOOK by VisualPony
WARNING: Major spoilers in the comments.

Book 2 of the Alicorn Adventure series.

Goodreads Page
100% Approved by Twilight's Library!

The Badass Twilight tag applies more than ever, but please note the new tags.

This story is a fairly direct continuation of The Celestia Code. You might be able to follow it without having read The Celestia Code first, but it's better if you do.

The sequel is here: The Twilight Enigma

Most excellent pre-reading/editing done by the erudite AcademicPony and the dapper statoose!

Princess Twilight Sparkle discovers a centuries-old mystery hidden in the Royal Archives. Her investigation leads through layer after layer of deception and misdirection, setting her hooves on a path that seems to be leading to a mysterious secret. Along the way, she learns that some friendships can be very, very strange.

Book 1 of the Alicorn Adventure series.

AUDIOBOOK by VisualPony
Featured at the Royal Canterlot Library
TV Tropes Page (Courtesy of Sandtalon)
Goodreads Page (Courtesy of Facedeer)
Equestria Daily Page

WARNING: Major spoilers in the comments. Takes place several months after the end of season four. (Not a Da Vinci Code crossover, BTW!)

Do you see a dark tag? No, you don't. Not dark. Well, okay, there are a couple of dark-ish bits, but that's all. Not enough to warrant a tag. Speaking of tags, there really ought to be "Badass Twilight" and "Friendshipping" ones.

Sequels and side-stories (and more) can be found here Offprint and AO3, and a hardbound two-volume set of all that can be ordered from The Ministry of Image.

My editor for the first edition of this story was Gogito, and I can't thank him enough for all the hard work he did. My editor for the revised version was PresentPerfect, and he did a terrific job of getting the story into excellent shape.

Far to the north, in the Crystal Empire, Princess Cadance has a ceremony known as the blindfold wedding, and ponies come from all over with the hopes of finding a mate. Somehow, Princess Cadance has her ways and means, and her blindfold weddings have a curiously high success rate, given what they are: two strangers who have never met getting hitched with one another.

Furious Funnel, a tornado wrangler by trade, decides that it is time to do something else with his life. After saying goodbye to his bosom companion Braeburn, he heads north with the hopes of finding a bride. He might not get what he wants, or even expects, but he’ll get exactly what he needs.

An entry in the Weedverse.

Stink Sentry.

When Twilight Sparkle opens a magical book taken from the Moochick's Study, she gets pulled into the middle, along with Sumac Apple. But if Twilight is going to somehow finish this story, she's going to have to start from the beginning.

The beginning is a long ways back.

A lore-heavy entry in the Weedverse.

Chartreuse Le Feu, a filly with a knack for shield magic, decides to become Shining Armor’s apprentice. She has plotted and planned for many years on how to accomplish this goal. Now, having finished primary school, she works to make this happen.

Shining Armor is in for surprise.

An entry in the Weedverse.

Chartreuse.

This story is a sequel to The Perilous Romance of Swans

Winter. A quiet time, perfect for reflection, spending time with loves ones and family members. It is also the time of Equestria's recovery after the tumultuous events that took place during the autumn; Mister Mariner's insurrection, a season of chaos, and the fall of Queen Chrysalis.

Now, Princess Celestia struggles to hold it all together. Every day is a crisis, but Equestria is being rebuilt. The nation recovers from Mister Mariner's gambit. The nobles of Canterlot are more active and more useful then ever before. Princess Luna is getting better, recovering more and more of herself every day.

So, during the long, dark winter, when the sun is scarce, Princess Celestia wonders... is she the princess Equestria deserves? Is she the sister that Luna needs? Is she the wife that Gosling thinks she is?

An entry in the Weedverse.

Fan art!

This story is a sequel to Princess Twilight Sparkle's School for Fantastic Foals

The Gift of Gab is recommended reading.

School may be out, but lessons continue for Sumac Apple. Life in Ponyville slows down as the snow grows deeper, and with winter comes a much needed respite for everypony. With two families joining together to double the fun, Sumac Apple will have an almost perfect holiday.

Of course, families of any sort tend to have their own moments of excitement, and then there is the matter of Megara...

An entry in the Weedverse.