Welcome to the future of vast bio-constructed cities with crime so severe that the cops drive tanks! For top tank-cop Leona Ozaki (and her trusty tank, Bonaparte), the day-to-day is a tall order already, but when the villainous and sexy (and super-powered androids!) Puma sisters become duly deputized officers of the law and are assigned to "help" Leona catch Urushi-Maru, "The Skyscraper Pirate," things are bound to get out of hand, especially in the midst of a full-on, tank-on-tank streetfight between Leona and a corrupt arms manufacturer bent on getting the city's police tank contract!

Takes place a few years after the first Ghost In The Shell manga. The Major has been missing since then, and Ghost in the Shell 2 follows the mysterious Motoko Aramaki as she runs an investigation into an incident at an organ factory and its consequences. She's on the run to clean up the mess and save herself in the process. Meanwhile, the former members of section 9 investigate Motoko to find out who she really is.

From Dark Horse:
Deep into the twenty-first century, the line between man and machine has been inexorably blurred as humans rely on the enhancement of mechanical implants and robots are upgraded with human tissue. In this rapidly converging technoscape, the covert-ops agents of Section 9 are charged to track and crack the most dangerous terrorists, cybercriminals, and ghost hackers. And speaking of ghosts, when supposedly dead people start turning up walking and talking, Section 9 begins to look into the possibility that corpses are being "puppeted" from a remote location, and some serious powerbrokers may be pulling the strings.
Ghost in the Shell 1.5: Human-Error Processor presents for the first time in America the "lost" Ghost in the Shell stories, created by Shirow Masamune after completing work on the original Ghost in the Shell manga and prior to his tour-de-force, Ghost in the Shell 2: Man-Machine Interface, but never collected until now. Focusing on Section 9 agents in their daily battle against technocrime, Human-Error Processor has all the mind-twisting cybermadness you've come to expect from Ghost in the Shell, but set in a more police-procedural context with action and suspense galore.

In a near future, technology has firmly taken root into society at large. Cybernetic implants are nothing uncommon and robots roam as plentiful as humans, all connected through their "ghosts" to the electronic datastreams of the net. Major Kusanagi Motoko and the Public Security Section 9 find themselves in a constant battle with the newly created wave of technological terrorists and cyber-hackers. But things take a turn once Motoko gets involved in a certain case involving an extremely dangerous "ghost" hacker nicknamed the Puppeteer, as she dives deeper and deeper into the limitless reality of the net, to reach her own startling conclusions.

From Dark Horse:
It's a time in the future -- a time where the creation of life itself has evolved to include biodroids named after the ancient Greeks and cyborg warriors programmed to destroy. The power struggle between the various synthetic life-forms and the humans could mean the end of all life. But there is one, named Typhon, who may be able to prevent that.

It is an age when large-scale natural disasters frequently happen all over the world. It is a time when cyborgs and autonomous robots are beginning to appear on the market in technologically advanced nations. Major world powers compete for technology and resources. The divide between rich and poor grows and the future for the poor looks bleak. In this transitional stage, everyone wanders around in a self-indulgent daze and the way out isn't clear.
This is the story of how two cybernetically enhanced girls meet in such an era.