What work is forbidden on Shabbat?

(Mishnah Shabbat, 7:2)

Sowing

Baking

Tying

Cutting hide up

Plowing

Shearing wool

Untying

Writing two letters

Reaping

Washing wool

Sewing two stitches

Erasing two letters

Binding sheaves

Beating wool

Tearing

Building

Threshing

Dyeing wool

Trapping

Tearing a building down

Winnowing

Spinning

Slaughtering

Extinguishing a fire

Selecting

Weaving

Flaying

Kindling a fire

Grinding

Making two loops

Salting meat

Hitting with a hammer

Sifting

Weaving two threads

Curing hide

Taking an object from the private domain to the public, or transporting an object in the public domain

Kneading

Separating two threads

Scraping hide

Above courtesy of Becoming Jewish.Org