Rocket Princess was written by Nobuyuki Anzai before he started his work on Flame of Recca. Basically, we follow Ishibashi Kango through his days as he interacts with a cyborg by the name of Oozora Kohime. If you liked Flame of Recca, then I'm pretty sure you'll find something to like in this one, too.

In a post-apocalyptic world, a girl leaves her village to find her missing childhood friend, and save her dying world. Her companion in her quest is a machine named "Edison Stein," and he can draw blueprints for magnificent machines. What will await them in "The world outside"?

A man is on a research expedition in an underwater city, where he discovers a holographic recording of a ballerina.

A grim reaper without any fail. Westernburg city's best hunter, Roi, known as 'Roar Scyther' for his trademark gun Roar Scyther goes on another mission for money!

From AnimeWaves: Touko's life seemed so ordinary, until she got that call... At the scene of the accident, by the puddle of blood, a young maid appeared... could no one else see her? And then, around the corner, a cry for help from a silver-haired boy... The veils are being lifted and the truth is being revealed!

It's been 6 months since the L5 Campaign, the conflict that pitted humanity vs aliens with the whole earth sphere at stake; even thought at that time humanity joined forces as a whole and fought valiantly for it's survival, now that the true threat is gone the remains from old conflicts that have kept discord among people from even before the aliens arrived have started to resurface and thus the fight is far from over.... The ATX Team, one of teams that probed pivotal in the L5 Campaign have been "living their usual" being at the mercy of the chain of command and taking part in cleaning up the remainders from the DC war---- but little do they know that again some extraordinary events are brewing up; with the arrival of a strange lady named Lamia Loveless, who seeks help from the team and seems to know more about them than what she should, the path has been set, headed towards a chain of events that might bring forth an even greater conflict that the one from 6 months ago.... Can Kyosuke Nanbu and his team break through all of the opposing forces, yet again?

In the far future, humans abandon the devastated Earth and move to the upper world "Tenjo". But Tenjo and the law of causation collapse by a war and humans returns to the Earth, which has turns into an inhabitable planet except for Shinshu area. Shinshu is too small to accommodate all the humans, so they duplicate the area and create "Juso Sekai". In order to rebuild Tenjo and the law of causation, the returned humans start reproduction of history from B.C. 10,000. When the reproduction completes until A.D. 1413, a war breaks out in Shinshu and Juso Sekai falls onto the original world. The humans living in Juso Sekai lose their land and invade the original world. People in Shinshu surrender and is divided by the invaders from Juso Sekai. They try to resume the history reproduction from A.D.1457, but the update of history terminates in A.D.1648. A rumor of apocalypse begins to spread around the world. - Wikipedia

From MangaHelpers: The weapons of the future, Metal Vessels, are being developed by different companies. One company, Sigma, has created a vessel that is controlled by two people-- a telepath and an anti-telepath. These two people are the teenage girl telepath, Yuiri, and her friend Io, an anti-telepath. They use their vessel mostly in demonstrations, such as competitive exhibitions with rival company Ciel's newest model. While these vessels may seem to be the way of the future, the technology can also be very dangerous. A serial murderer is on the loose, who chooses targets through a website, and the police are beginning to suspect that the killer is actually using a Metal Vessel... [tethysdust]

Set in a world similar to Earth in the mid twentieth century, Strike Witches tells the story of a fight to protect that world using a combination of magic and technology. The titular Strike Witches, a group of young women with high magical potential, have been gathered together from various nations in a task force to fight against the enigmatic Neuroi. This puzzling enemy force has appeared frequently and without warning in many areas across the world. The weapons of the Neuroi mostly take on forms similar to propeller aircraft but their most troubling tactic is the spreading of a corrosive miasma. Not only do normal humans have no defense against this miasma, but the remnants of the land affected by it are processed by the Neuroi into new weapons, crumbling huge sections of former nations into the sea. As the miasma seems to be unable to spread across large bodies of water, humanity has designated such areas as their main lines of defense. In order to bring out their potential for use in battle, each Witch equips a unique machine onto their legs: the Striker Unit. With the Striker Unit equipped, they gain the ability to fly and their tapped magical potential provides the strength to utilize weapons far too heavy and powerful for a normal man. Also created is a defensive field that can protect the Witches from the Neuroi's miasma as well as other physical weaponry, making them humanity's trump card in the war. The franchise's main media focuses on the 501st Joint Fighter Wing, spearheading the counterattack in war-torn Europe.

From Anime News Network: The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Redo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space. Waking from his artificially induced hibernation, Redo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Redo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Redo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him.

22 years ago a mysterious seismic phenomenon rocked the Yokohama district, thrusting it miles into the sky and effectively separating it from the rest of Japan. In the following years, a fraction of the newborns in this fledgling world began to develop extraordinary powers, each unique to the personality of the possessor. These mutated humans became known as Alters and were responsible for turning the former Yokohama into a chaotic wasteland. Now, as the former metropolis continues to re-build itself, the Alters have fallen into two camps: those who have joined HOLY, a dogmatic organization that hopes to re-establish order and morality, and those who wish to lord over the comparatively weaker humans. Only Kazuma, a powerful Alter who's really only interested in looking out for himself and an orphan girl named Kanami, stands between them, suspicious of both sides and unaware that he may hold the key to harmonious co-existence.

SIN takes place in a post apocalyptic future derived from a universe very similar to ours. The inevitable lack of resources to sustain humanity on Earth had split the world into two warring factions, the United Nations (U.N.) and the New Earth's Alliance. (N.E.A.). After years of unnecessary conflict and technological advancement in weaponry, both sides eagerly stumbled into peace to avoid extinction. Now under the rule of the newly formed United Earth's Federation (U.E.F.) space has become the last hope for the human race. However, with resources more scarce than ever the clock is ticking. How do we decide who's privileged to live and who's not? What happens to those of us left behind? A world now loosely controlled by a single totalitarian government, overrun by gangs, private military groups, freedom fighters, and death; Life seems to provide no more than a fruitless future. Regardless, there are still those of us that fight, we fight each other, we fight the system, we fight for our loved ones... whatever the reason, we battle for answers.

From Tokyopop: On a world with no women, the surviving men have reintroduced the female in the form of an android. Called Marionettes, they are built to serve men and are limited in their interactions with humans. That is until a poor boy named Otaru Mamiya encounters a Marionette named Lime. Lime is a Saber model with a special circuit that gives her emotions. When Otaru awakens two more Saber Marionettes, his life as an 'average' man quickly becomes as extraordinary as the lives of his eager, busty new friends.

[From Viz]: Shy Chise and nervous Shuji are high school seniors in a small town and have just started dating. But everything changes when Shuji discovers that Chise has been engineered by the Japanese Self Defense Force to transform into the Ultimate Weapon! Soon Chise is torn between realizing her potential as a devastating fighting force and her desire to share a bowl of ramen with her new boyfriend!

Jose lived a normal life until he met this girl, Maria, who was mysteriously targeted by unknown individuals. He got himself involved and was eventually killed by her pursuers. This event led to the awakening of Jose’s hidden abilities that brought him back to life; which unknown to him, is an unimaginable power that runs in his blood. He had been carrying in him the strength of one of the strongest Archangels who was foretold in the Prophecy of the Karmanics to be the savior of mankind. (Published by www.MangaMagazine.net) This is a Filipino manga.

The story begins with a scientist, Dr. Yorkshire Bell, noting that dinosaurs flourished and became extinct when they advanced beyond their ability to adapt to change. Giant mammals, such as the saber-toothed tiger and the mammoth, came and went the same way

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Reiko finds a starving mysterious animal that looks like a cat with wings. To the girl's surprise this cute animal names itself a space salesman that would sell advanced technology to humans for just a bit of hahise, which is abundant on Earth. But what is hahise? Would you pay it for a machine that can copy anything?

[From Aku-Tenshi]: In the center on a metropolis city lies a small, shaky-looking house. A normal... Okay... Not so normal high school student, Sakura Tetsu (and his family), who works day and night relentlessly to support his family's living expenses, lives there. All is normal until one day, people from the future, alien pirates from outer space, appear. The underground kingdom claims Tetsu's land. Will he prevail in protecting his own land? Or will he surrender his land into many more invaders to come? Yes... Weirdness and insanity ensues!

Another dead body has washed ashore, and the adorably cute, pony-tailed doshin Aki wants to find the murderer. Instead he meets mysterious Kuga who seems to know more than he is willing or can say, but what else needs to be said as Kuga captures Aki's lips? Are Kuga's feelings real or is he trying to distract Aki from his investigation?

A comet passing close to the Earth flooded it with cosmic radiation. The radiation mutated male genitalia and sperm, killing approximately 70% of the males on Earth. Finding that there would be long term damage on females, they take 200 fertile women, and send them off on a 2 year journey to another planet.

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The story of Steins;Gate takes place in Akihabara and is about a group of friends who have managed to customize their microwave into a device that can send text messages to the past. As they perform different experiments, an organization named SERN who has been doing their own research on time travel tracks them down and now the characters have to find a way to avoid being captured by them.

From Fairgame: Wanting to live with facing forward... everyone wish that they can, but there is a day that you wanted to go back, no matter what it takes. There is someone you wanted to meet, truth that you wanted to know... just to step foward from now. Door of time leaping story that makes you moved and tearful, is opened. To a person, past can be a "support" but in a same time, it can also be "a weight". Truth is those two things are exactly same thing. Simplely, you are just using single "lump" for support or just making it to your weight. It's just how it form is decided by within your heart. From Baka-Updates: In the year 2022, Kazamidori Aki works at the Time Travel Research Facility with her assistant Miyama. They use a technology called Aston that has scanned every detail of the city for the past twenty years and recreates the past exactly as it appeared into a client’s mind. This process called the In-Brain time travel allows the user to visit his past. But because it is only in their mind, they are unable to change anything in the present so no time paradoxes occur. Aki uses her services to help those who made mistakes in their past and help them change their ways. There is something odd about Aki’s past that makes her very unique and she has to deal with the skeletons in her closet.