Hardware Manufacturer
B&K, Denon, DirectTV, Dish Network, Emotiva, Harmon Kardon, JVC, Kenwood, Magnepan, Marantz, Onkyo, Oppo, Outlaw, Parasound, Pioneer, NHT, Samsung, Sony, Status, SVS, Tivo, Toshiba, URC, Yamaha,

Cables
Better Cables, Blue Jeans, Cable Asylum, monoPrice, Percy Audio,

Digital Photo
Canon, Digital Photo Review, Digital Picture, Fred Miranda, Imaging Resource, Kirk, Nikon, Photo.net, RRS, Scan Cafe, Steve's, Strobist, Wimberley,

iPod
BSE, Contour, iLounge, iSkin, Power Support, VAIS,

Buying Equipment
Accessories 4 Less, Audio Advisor, Audiogon, B&H, Best Buy, Costco, craigslist, Crutchfield, Digital Connection, One Call, Projector People, Sears, Thomas Dist., Vanns, Visual Apex,

Streaming Media
Amazon Video, Apple, Cord Cutting, Cord Cutter News, DirecTV Now, Google Play Store, Hulu, JustWatch, Movies Anywhere, Netflix, Nvidia Shield, Pandora, Playstation Vue, Plex, Roku, Sling, Spotify, Vudu, Youtube TV,

DVDs
Amazon, Deep Discount DVD, DVD Price Search,

Discussion/News
Audio Review, AVS Forums, dbstalk, Digital Bits, Home Theater Equipement, Home Theater Forum, Remote Central, Rting, Sound & Vision,