From Tokyopop:

If you think facing a man-eating witch is dangerous, imagine having to face the one-eyed monster that ate it. In a farcical tale of hijinks and swashbuckling adventures, Rath, Rune, and Thatz become the Dragon Knights of Fire, Water, and Earth and scour a mystic landscape.

Their quests? Fortune, love, and honor. And though they may have to work together, no one says they have to like it. The Dragon Knights are put to the ultimate test when their fighting involves more than just their enemies.

From Ivyscan:

Rin, a girl fresh from the country, is discovered by Dragon Knight Grian to be the new Star Princess, whose job it is to bring good harvests to the kingdom through her prayers. Rin's powers awaken as she tries to bring the barren lands back to life in order to cure the curse that eats away at the Dragon Knights. However, more and more questions turn up!! Rin finds herself caught up in the mysterious murder case of the previous Star Princess, Fionnuala! What does the future hold for this country girl?

An RPG-ish gag manga about a half-dragon-half-human girl whose love for a popular idol/dragon-slayer leads her on a quest to find a potion that will make her fully human. Which of course leads her and her friends in a quest to defeat the terrible Demon Lord Azatodeth.

Features Illya as a main character where she's living an alternate life as a school girl. However, she is chosen by the Magical Stick Ruby and is involved in a quarrel between Rin (Kaleido Ruby) and Luvia (Kaleido Sapphire).

From JShoujo Scans:

With the ability to see the negative emotions of people, and to see it as if they’re monsters, whose character can be different and weird, she is Deng. Because no one can understand how she feels, a wall has been built around her heart. However, after living with her innocent brother and with the help with some good friends and Karas, the person that can consume evil intensions, her world has begun to change…

The year is 2718 by the Imperial Calendar, and ZIPANG (Japan) has crumbled in a huge battle against Majinki, terrors from the sky that are half beast and half machine. Hurting each other, warping their morals, unable to see a future, the people strive hard to survive each day. The war wiped out 70% of the human race, but amidst the darkness arose the seven members of the XILE Tribe to bring salvation to the race. But now, 500 years later in 3218, the wicked shadows of the Majinki have once again crept up upon them. This is the story of EXAMURAI, that of the XILE Tribe, who will fight to the death to protect their love, dreams and happiness. Having survived for 500 years since the events of 2718, the final battle of the seven members of the XILE Tribe begins under this azure blue sky... Based on the members of popular Japanese band, EXILE: Hiro, Atsushi, Takahiro, Makidai, Matsu, Usa and Akira.

[From Tsuzuku Jinsei o...]:

As the pioneer Evangel, it is Lufiras' job to rid the world of lower level demons who cause mischief. No hero can go without a sidekick, so Cadiz the (slightly annoying) Intermediate Level Demon decided to descend to earth as well to make sure his little buddy Lufiras-chin wouldn't go lonely. Together with Manaka, who (reluctantly) allowed them to freeload off her during their stay in Japan, they go on their way exterminating low level demons, eating kakigoori (shaved ice thingies) and causing a racket at school.

Onizaki Teppei is a high-school freshman who just wants to live a plain student life, but his world is rudely shaken by a mysterious girl, Mitogawa Enma, who declares her intent to find a husband at the school!

In a world called Barzel exists a particular profession called Private Military Firms or more commonly known as PMFs. They take on any particular job ranging from stealing to security as long as the price is right. Lynbell, Zephyr and Vashyron joined alliances to take on jobs and have been doing decently even in this highly competitive and cut throat industry. However, lately, there has been a mysterious figure who has always been one step ahead of them, taking their jobs and keeping them from making money. And now, it seems that person is their new client.

This manga appears to be related to the video game: Resonance of Fate.

Verde, a powerful and secret organization that controls the world, has a new leader. The only thing that stands in its way is an unlikely character, Kujou Shin, the king of pessimists. He has no attachments to anything or anyone and feels no hesitation to dying. He is unwillingly dragged into a fight for the most powerful position in the world, the leader of Verde. What will his fate be?

From Tokyopop:
Coud is a young sky pirate who discovered a girl with mysterious powers on what had seemed like a routine mission. Ren has the ability to lend Coud bizarre fighting capabilities (his arm turns into a giant blade of some sort), being part of a race of beings called Edel Reid, but being the possessor of a stone called the Elemental Gelade, she has powers even beyond the norm.

Melty Blood (????????, Meruti Buraddo?), is a visual novel and fighting game, co-developed by d?jin circles Type-Moon and French-Bread, originally released at Comiket on December 2002. It is shortened as simply Merubura (?????). Based on Type-Moon's visual novel game, Tsukihime, it later spawned an arcade version, titled Act Cadenza, that was developed by Ecole Software and has also been ported to the PlayStation 2. Act Cadenza is the first Type-Moon title to receive a PlayStation 2 port. A manga version by Takeru Kirishima has been serialized in Kadokawa Shoten's Comp Ace. [from wikipedia]

Fortune Arterial's story revolves around the male protagonist Kohei Hasekura, who transfers into a prestigious public school--an English style six-year school, serving junior high and high school students. The school, named Shuchikan Academy, is on an island, Tamatsu Island, off-shore from mainland Japan, and the only way to get there is by boat. This is a series of characters' introductions to prelude the main story.

From AQUA Scans:

"Flowernoid", dolls created with the special nature of flowers, and who devotes themselves to a master. This is the story of Satsuki, a master flowernoid repair specialist whose daily life changes by happening upon a lovely flowernoid. "From now on, I belong to you" the flowernoid claims.

Ouka is the great empire that rules over 1/3 of the world. To prevent conflicts from the other countries, they hold the battle competition once in every 8 years. In this competition, 5 candidates, known as "Patriots", from each countries are to battle against each other and the winners will be granted with fame and honor. This story follows Kurou, the boy who walks the same footsteps as his father to become the strongest patriot, along with his team . . .

Teased unmercifully for his past as an orphan and a slave, Teito has only his best friend Mikage to ease his days at the elite Barsburg Academy - and his mastery of the magical art of Zaiphon! But even that will not be enough to save him when he discovers a horrifying secret behind the ruling Empire. Trapped in an ancient battle between a wicked Death God and the Seven Ghosts and guided by three mysterious priests, Teito discovers a power that could save the world... and shed light on his own mysterious past.

From Wingtip Cafe:

Udagawa Kachiko is a studious no-nonsense high-school girl. One day, she found an entrance to a fantastic world called Fusuma Land.

From Viz:
Miaka Yuuki is an ordinary junior-high student who is suddenly whisked away into the world of a book, "The Universe of th Four Gods". There she becomes the priestess of the god Suzaku, and is charged with finding all seven of her Celestial-Warrior protectors.

A Japanese student named Arisu gets on the wrong bus and winds up in some sort of homoerotic version of Lewis Carroll's Wonderland. The last thing you want to do in a land where people change shapes at the drop of a hat is to drop the soap and introduce yourself as Arisu (identical in Japanese to Alice), lest you start looking like one! And Arisu does, slowly but surely...

A fantasy story for kids featuring a girl named Melmo, who can change her age as she wishes by eating special candies.

Melmo's mother dies in a traffic accident, leaving young Melmo and her younger brother Totoo. Anxious, Melmo's mother in heaven asks God to prepare some magical candies, and hands them to Melmo.
There are two kinds: Melmo can grow 10 years older to become any sort of adult she wishes by eating a blue candy. By eating a red one, she can become 10 years younger.

Using these miracle candies, Melmo disguises herself as a nurse, schoolteacher, policewoman, and overcomes troubles together with her brother, Totoo.