Please also note that there will probably be a million and one cases/accessories for this phone. While I would like to post everything, only those highly reviewed and known for quality or some special feature will be on this list.

Here is a compilation of accessories and deals for the Samsung Galaxy S3.

If you have any suggestions or want to add something to the list, feel free to PM me with a link to your review. If you would also like me to review a case, please also PM me and I'll see what I can do.

Thanks to everyone and their contributions. If this post has helped you, please help me out by donating. These accessories can be very expensive =P

Unleash the power of your phone with accessories! Check this out:
http://www.youtube.com/watch?v=46IiRyigUH0

Cases

Samsung Ultra Slim Covers:

http://www.samsung.com/us/mobile/cel...ETC-2PKSCEGSTA

Samsung Galaxy S III Protective Gel Cover- Translucent Blue:

http://www.samsung.com/us/mobile/cel...EFC-1G6WBEGSTA

Samsung Flip Cover (White):

Review: http://forum.xda-developers.com/show...&postcount=236
http://www.samsung.com/us/mobile/cel...EFC-1G6FWEGSTA

Samsung Flip Cover (Pebble Blue):

Review: http://forum.xda-developers.com/show...&postcount=236
http://www.samsung.com/us/mobile/cel...EFC-1G6FBEGSTA

Samsung Mesh Vent Case:

http://www.amazon.com/Samsung-Galaxy.../dp/B0080D1GHK

Otterbox Galaxy S3 - Commuter Series:

http://www.otterbox.com/Samsung-Gala...alaxy-s3-cases

Otterbox Galaxy S3 - Defender Series:

http://www.otterbox.com/Samsung-Gala...alaxy-s3-cases

Seidio Galaxy S3 - Surface: 

http://www.seidioonline.com/samsung-...r3ssgs3-bk.htm
Combo (Case+Holster): http://www.seidioonline.com/samsung-...r3ssgs3-bk.htm

Seidio Galaxy S3 - Active w/Metal Kickstand 
Review: http://forum.xda-developers.com/show...&postcount=323
http://www.seidioonline.com/samsung-...3ssgs3k-bk.htm
Combo (Case+Holster): http://www.seidioonline.com/samsung-...3ssgs3k-bk.htm

Rock Quicksand - Polycomposite Case
Pictures: http://forum.xda-developers.com/show...1&postcount=37
http://www.amazon.com/Rock-Samsung-Q.../dp/B0089E283G
http://www.ebay.com/itm/High-Quality...ht_10234wt_962

Cruzerlite Androidified A2

http://www.cruzerlite.com/cases/sams...g-galaxy-s-iii

Incipio SILICRYLIC DualPro Hard 

http://www.incipio.com/Samsung-Galax...icone-Core.asp

Rearth SLIM Lite Eco Package
http://www.rearthusa.com/galaxy_s3_ringke_case

Trident Aegis: Many different colors.

http://www.tridentcase.com/case/sams...egis-case.html

Diztronic Matte Black TPU Case (Thanks to Ploone)
Video Review: http://forum.xda-developers.com/show....php?t=1757335 
http://tpu-cases.com/index.php?main_...ex&cPath=42_68

Story - Custom Handmade Leather Flipcovers (Thanks to demesh)

http://www.storyleather.com/

SGP Spigen (Thanks angie4u)

http://www.spigen.com/cell-phone/sam...ir-series.html

Casemate (Thanks angie4u)

http://www.case-mate.com/Samsung-Gal...here-Cases.asp

Bird Nest Galaxy S3 Case (Thanks tradesteady


http://www.slickfans.com/bird-nest-c...ite_p2108.html

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Screen Protectors

Invisishield:
- $24.99 / $14.99
http://zagg.com/invisibleshield/sams...ns-shields.php

Ghost Armor:
NO IMAGE YET! - Not yet announced
http://www.ghost-armor.com/category/Phone/Samsung/

Bodyguardz:
Full Body: $24.95

http://www.bodyguardz.com/samsung-ga...=sort_priority

Screen Protector: $15.95

http://www.bodyguardz.com/screenguar...=sort_priority

Spectre (Not yet available): What better way to protect your Gorilla Glass 2 with more glass!

http://www.xgearlive.com/products/android/spectre
$5 Discount code:SEXYS3 Thanks stan.s

Armorsuit

http://www.armorsuit.com/cell-phones...galaxy-s3.html

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Battery/Docks/Armbands:
Samsung Spare Battery Charging Station + Dock: (Does not charge the phone. Only a battery.)

http://www.samsung.com/us/mobile/cel...ETC-CP1G6LGSTA

Samsung Galaxy Universal Multimedia Desktop Dock

http://www.samsung.com/us/mobile/cel...EDD-D200BEGSTA
http://www.ebay.com/itm/H42-New-Sams...ht_3379wt_1163 Cheaper on Ebay! -Thanks EM2_Rob

Mugen Charging Dock + Spare Battery Charger: (Charges both phone and battery)

http://www.mugen-power-batteries.com...ery-slot.html#

Samsung OEM Standard Battery 2100 mAh: $25.56

http://www.thecellguru.com/Products/71619

Anker® 2200mAh Li-ion Battery for Galaxy S III

Review: http://forum.xda-developers.com/show...&postcount=235
http://www.amazon.com/Anker-GT-I9300...ker+S3+battery

Mugen Power 4600mAh Extended Battery for Samsung Galaxy S III I535 with Battery Door [HLI-I9300XL] Thanks sanjsrik
http://www.mugen-power-batteries.com...tery-door.html

3500mAh White External Battery Back Case Cover For Samsung GT-i9300 Galaxy S3 Thanks tarheelsmj12001

http://www.ebay.com/itm/3500mAh-Powe...ht_2485wt_1396

2600mAh External Battery flip Case Cover For Samsung Galaxy S3 i9300 Thanks tarheelsmj12001

http://www.ebay.com/itm/2600mAh-Exte...ht_2528wt_1396

Mugen HDMI Dock

http://androidcommunity.com/mugen-po...dock-20120619/

Samsung Infuse 4G Car Dock (Yes it works with our phones. I have one and it fits. It's very snug so it won't work with a case)

http://forum.xda-developers.com/show....php?t=1725013
http://www.att.com/shop/wireless/acc...id=NZVl--1A8DA

ProClip Modular Car Dock + Mounting System (Thanks baudi11)

Video: http://www.youtube.com/watch?v=1PXPP...layer_embedded
Mount: http://www.proclipusa.com/vehiclemou...clemounts.aspx
Plate: http://www.proclipusa.com/store/prod...el-215058.aspx
This is interesting because there are a TON of vehicle mounts in different configurations beside the usual suction cup or air vent mounts. Makes it that much better if you don't mind it not being universal for each car.

Arkon Mega Grip Car Dock

http://www.arkon.com/megagrip/megagr...ent-mount.html

Mounttek Universal Car Mount

http://www.amazon.com/gp/product/B00...ls_o05_s00_i00

Arkon Smartphone Armband

http://www.arkon.com/Galaxy%20S%20II...3-armband.html

Belkin Armband

Video: http://www.youtube.com/watch?v=-cNrmyebUG4
http://www.belkin.com/IWCatProductPa...duct_Id=659404

Verizon Wireless Charging Kit

http://www.androidauthority.com/wire...stores-105433/
http://www.verizonwireless.com/b2c/s...essoryId=47605

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Stylus:
Samsung Galaxy S III C-Pen:

http://www.samsung.com/us/mobile/cel...ETC-S10CSEGSTA

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Keyboards/Mice/Input Devices

http://www.ebay.com/itm/New-Mini-Key...item1c2840fa88

Game Clip

Video Review: http://www.youtube.com/watch?v=Wiek3...layer_embedded
http://forum.xda-developers.com/show....php?t=1760595

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Connectivity/Adapters:
Samsung MHL Adapter (Galaxy S III Version):

http://www.samsung.com/us/mobile/cel...EPL-3FHUBEGSTA

Saumsung Allshare Cast Dongle: (NOT YET AVAILABLE) Maybe Sept 2nd for US???? http://www.expansys-usa.com/samsung-...router-232250/

http://www.samsung.com/global/galaxy...cessories.html
CURRENTLY ON AMAZON $99.99 USD including shipping: http://www.amazon.com/Samsung-EAD-T1.../dp/B0089VO7MY

USB OTG Adapter: (Can find these everywhere but here is a link)

http://www.overstock.com/Electronics...0/product.html

OrientEX Multi-function smart cable

Review: http://forum.xda-developers.com/show...&postcount=306
http://www.amazon.com/OrientEX-Multi...ion+Smartcable

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SD Cards

SanDisk 32GB microSD microSDHC Card Mobile Ultra Class 10 UHS-I UHS-1 with USB Card Reader - $36.45 (8/8/12)
http://www.newegg.com/Product/Produc...9SIA12K0932058
(Thanks nojak)

SanDisk Ultra microSDXC Class 6 Flash Memory Card - $54.99 (7/7/12)
http://www.amazon.com/SanDisk-Mobile...s=64gb+microsd
(Thanks tragicallyhip)

SanDisk 64GB 64G microSDXC microSD microSDHC SD SDHC SDXC Card Mobile Ultra Class 10 UHS-I - $94.50 (7/23/12)
http://www.newegg.com/Product/Produc...9SIA12K0948061
(Thanks nojak)


SOURCE