Okay, in no particular order:
Solifoam - dispensed from grenades or from something like a firehose. Hardens within seconds of exposure to air. Traps lots of air so won't suffocate anyone inside, but locks them up tight in hardened foam. Which, when enough is applied, is hard to break. Would require BD or major major muscles. Even then, break out might take some time. Might gum up BD servos. Can be disolved with a solvent or cut off carefully. Used amongst other things in crowd control.
Net Grenade - think Predator, only not nasty in that it does not tighten and cut you up. Limited range. Net can be made of something relatively harmless like plastic (bitchingly hard to cut though) or maybe something like glass fiber or microfiber metal or composite for netting heavier targets.
Stun Cuffs - Capacitor'd cuffs with a remote. Perp gets uppity, cop taps his PDA. Zap!
Suppressor - higher tech headband, suppresses upper level brain functions and puts one into a zombie like state where one will take simple instructions and be passive and calm.
Bean Bag - shotguns, small GLs, some gauss weapons with an attachment, can fire bean bag (likely a rubber batton too). Non-lethal (usually. sometimes the flechettes get loose and kill people...) takedown tool.
Microwave Fence - a series of transmitters used to setup an invisible riot control fence. As you get closer to it, you start to get warmed up, get itching on the skin, etc. As you stray closer and closer, you get zapped more heavily. Eventually this will knock you out (and do some dermal damage). Effective for establishing crowd control by cordoning off avenues. Can be mounted mobile on AFVs for 'pushing wall' to push down streets and alleys.
Puke Laser - laser taser - strobes a laser beam at the right frequency to induce dizziness, vomiting, and general weakness and loss of control (a lot like various kinds of fit). May in fact have long term neurological side FX (unknown yet... but the item does exist at current TL). Can have a unit set for humans, another for dogs, or a composite (different frequencies). Very effective at close range and if opponent unsuspecting. Closing eyes, some polarizing high tech glasses or helmet visors, etc. will stop. Hands over eyes works too. Primary use idea is for takedowns... once you get the perp close up and he starts kicking and screaming, you say "Bud, Look at the Birdie!" then Blammo, and he's a pile of relaxed, vomiting goo - no fight left. So the takedown becomes easy.
Shockrods - done to death in sci fi
Gas Grenades - tranq gas
That ought to get you started.