As of March 2015, some of the major producers of washers and dryers are Samsung, Whirlpool, LG, GE and Maytag. These companies all produce standalone washers and dryers as well as stackable sets.
Some other major brands are Frigidaire, Electrolux, Admiral and Hotpoint. These brands are carried by major retailers such as Home Depot, Lowe's and Sears. These manufacturers produce both front-load and top-load washers as well as gas and electric dryers.
Major manufacturers of portable washers include Haier, Magic Chef, GE, StoreBound and Danby. Portable washers are small washers that use a sink faucet and do not require standard hookups.