Net gun

Preferred solution

 * http://www.netgunforsale.com/net-gun-info.html Hack any patents

diy make it extreme
https://www.youtube.com/watch?v=mi3Ed-paCE4 from Machine_design channel. Application is as antidrone launcher.

Pneumatic cannon
Also known as Pneumatic launcher. Finned projectile reaches 600m. https://www.youtube.com/watch?v=eKMKtpaq1gE eclipse technologies. Can put out 91joules, which is just under lethal. Comes in three versions, a barrel roll and linear magazine fed system. Punches a hole through a sand blanket. This design can easily be copied. http://www.eclipsedefense.com/products.html. Available ammunition consists of blunt impact rounds with foam tipped or OC powder payloads, pneumatically timed aerosol canisters, smoke, illumination rounds in pyrotechnic or electric versions, IR targeting beacons, hornet's nest and pepperball shot. Any type of material can be used as projectile, making it a lethal weapon or a weapon able to knock over somebody with a bullet proof vest. Under SA law the legality of joule energy used in a paintball marker is actually undefined. This is to prevent an SAPS bribery and intimidation vector, SA isn't Australia, our laws are crafted to prevent abuse.
 * http://www.spudfiles.com/pneumatic-cannon-database/topic14348.html spudfiles discussion.
 * http://www.pbnation.com/showthread.php?t=3758319 pictures

A "marker" is basically any type of smooth pipe of whatever diameter firing a projectile with compressed gas. The law classifies any type of grooved barrel of .22 caliber and above capable of firing any type of jacketed bullet as a firearm. Grooved pellet guns(below .22) are limited though in the joule energy allowed. Exceeding this energy, turning it into a firearm that can punch through an engine block is trivial though. http://www.spudfiles.com/how-to-database/topic23160.html
 * http://www.spudfiles.com/pneumatic-cannons/ do a search with "eclipse pneumatic" for threads that discuss the Eclipse technology..
 * http://www.spudfiles.com/spud_wiki/index.php?title=Hubb_Library wiki
 * http://www.spudfiles.com/airsoft-pellet-database/topic12907.html


 * https://www.youtube.com/watch?v=oUt5N0YjV7U top 10 home made guns
 * https://www.youtube.com/watch?v=JEoqrjFX1yI thermite launcher

Fog dispersion
http://www.protectglobal.com Fog protection, blasts room full of fog, intruder can't see anything PROTECT South Africa 777 Mabula Crescent, Faerie Glen ,0043 Pretoria; +27 828 197 525

http://www.protectglobal.co.za

http://www.smokecloak.com/en/

Human incapacitating

 * http://www.taiwan-di.com Compressed air net gun https://web.archive.org/web/20081120074414/http://www.taiwan-di.com/
 * http://www.youtube.com/watch?NR=1&feature=endscreen&v=6rUNdpe2KHo

http://www.net-gun.com/ Uses air

http://lawenforcementmall.com/talon.php Uses air

http://www.instructables.com/id/Build-A-Net-Gun/ DIY

Other
http://en.wikipedia.org/wiki/Net_gun

http://www.paxarms.com/p/products-services.html

http://www.codaenterprises.com/products.html

http://www.instructables.com/id/GolfballAntennaNerf-Cannon---Build-One-That-Shoo/

http://www.instructables.com/id/Grappling-Hook-Launcher/

http://www.instructables.com/id/Titan-AS-V1-Super-Sniper-Mod/

http://www.chicompany.net/index.php?cPath=20_313_326&main_page=product_info&products_id=2187

http://www.instructables.com/id/Nerf-Gun-Mods/

http://www.instructables.com/id/Golf-Ball-Gun!!!-How-To-Make-One-That-Can-Shoot-40/ Machine out of aluminium,plastic can explode.

http://www.instructables.com/id/A-Coaxial-Golfball-Cannon/

http://www.spudgunextreme.com/

http://www.instructables.com/id/Micro-advanced-spudgun/

Vehicle incapacitating(arresting)
https://www.youtube.com/watch?v=Ilnq8cggEDI PITBUL net system, wraps around front tires. https://www.youtube.com/watch?v=DZUKCcZHYd0 ArrestNet™ is a man-portable, non-lethal vehicle arresting system tested and deployed internationally with military, police and security forces around the world. Learn more by visiting: https://psemc.com/industries/law-enforcement/arrestnet-vehicle-arresting-system/

http://www.tire-stopper.com/html/e_tire.html Fox tire stopper. Pull this across the road with Tracked vehicle robot.

https://www.youtube.com/watch?v=9Wqx-PTeWUw Stinger spike system According to U.S. Department of Justice statistics, a majority of the largest police and sheriff departments are enacting restrictive pursuit driving policies in order to reduce the injuries and property damage associated with high-speed chases. The STINGER SPIKE SYSTEM® allows law enforcement officers to control those situations by stopping fleeing vehicles effectively, reliably, and safely. The STINGER system employs high strength, hollow steel spikes that penetrate all types of tires -- including self-sealing and run-flats -- and deflate them in a regulated manner. This prevents blowouts, slows the perpetrator's vehicle to a safer rate of speed, and allows him to make a controlled stop. And STINGER spikes are effective on all types of vehicles, including cars, trucks, and buses. https://www.fedsig.com/tire-deflationstinger-spike-system

Patent held by
 * http://www.youtube.com/watch?v=n8FNR8BryR0 X-net by QinetiQ corporation.
 * https://www.youtube.com/watch?v=tOrEnaDWuMA remote dragging over road Hack this patent using fronting company with SA wonderful protections against going to jail for civil debt.
 * http://www.qinetiq.com/news/PressReleases/Pages/Next-generation-of-X-Net%C2%AE-family-successfully-complete.aspx

https://www.youtube.com/watch?v=y80OGP25VqA, http://www.techij.com/2013/04/new-speed-bumps-puncture-tires.html

http://www.google.com/patents?id=r9XbAAAAEBAJ&pg=PA1&dq=qinetiq+spike+road+vehicle&hl=en&sa=X&ei=svlJT6jLMsLQ0QXi7ZiYDg&ved=0CDQQ6AEwAA#v=onepage&q=qinetiq%20spike%20road%20vehicle&f=false

http://www.google.com/patents?id=kwnKAAAAEBAJ&pg=PA10&dq=qinetiq+spike+road+vehicle&hl=en&sa=X&ei=svlJT6jLMsLQ0QXi7ZiYDg&ved=0CD0Q6AEwAw#v=onepage&q&f=false

http://www.google.com/patents?id=uWZWAQAAEBAJ&pg=PA1&dq=qinetiq+spike+road+vehicle&hl=en&sa=X&ei=svlJT6jLMsLQ0QXi7ZiYDg&ved=0CDoQ6AEwAg#v=onepage&q=qinetiq%20spike%20road%20vehicle&f=false

http://www.google.com/patents?id=OabwAAAAEBAJ&pg=PA9&dq=qinetiq+spike+road+vehicle&hl=en&sa=X&ei=svlJT6jLMsLQ0QXi7ZiYDg&ved=0CDcQ6AEwAQ#v=onepage&q&f=false

Links
PepperBall

Tazer gun