Black Corinth (a.k.a. Champagne Grapes)
These are not actually used in making champagne, but their small, round size and clever marketing has made these sweet, crunchy grapes popular for table use. They're even more commonly seen dried in the form of Zante currants.
Black Monukka Grapes
Black Monukka Grapes are used for raisins, but are also a crisp, sweet table grape. Their thin skins, however, mean they aren't great for shipping. Look for them fresh at markets or try growing your own.
Bronx grapes are a fairly hybrid prized for its silken texture and flavor much like the aromatic muscat grapes.
Cardinal grapes are remarkably "red" and really quite sweet. They are a cross between Red Flame (or Flame Tokay) and Ribier grapes. Cardinal grapes are large, have thick, crunchy skins, and are known for their noticeable (large) seeds.
Concord grapes are often used for juice and jelly, but they make great table grapes, too. They are deep purple - almost black - and will stain anything they can, so consider yourself warned! Concord grapes are a deep blue-black color, large, and extremely sweet.
Concords are native to North America and part of a group of grapes known as "slip skin" grapes. The skin slips easily off the flesh, yet the flesh and seed cling tightly to one another.
Emperor grapes are large, red, sweet, and seeded. They have thick skins and a mild cherry flavor.
Perlette grapes are small, green, round and have a lovely white "frost" to the skin. It is a hardy variety good in home gardens.
Red Flame Grapes (a.k.a. Flame Tokay Grapes)
Red Flame Grapes are seedless, crunchy, and have a nice sweet-tart balance.
Ribier grapes are large, blue-black grapes with slightly bitter skins. They are sweet and tender and make tempting table grapes.