Neopaganism is the revival of Pagan and Naturalistic beliefs about Nature, the World and our Spirit. While Wicca is a specific form of Neopaganism, there are a wide variety of different beliefs which can comfortably be described as the mixing of older indigenous Pagan beliefs with more modern information from Ancient Cultures, anthropology and the occult writers of the Greek and European Occult traditions, sometimes with a smattering of Qabalistic and Gnostic concepts, or shamanistic practices.
It probably started with the interest updating ancient doctrines, combining them anew, and reviving the Old Knowledge with fresh interpretations. It reached it's public awareness threshold in the 1960s and 1970s with the Counter Culture Movement in America and the Green Movements of Germany, England and France.
Some of the practitioners categorized as Neopagan are: Gerald Gardner ; Victor Anderson; Starhawk; Margot Adler; Isaac Bonewits; Judy Harrow; M. Macha NightMare; BoneBlossom; Andras Corban Arthen; Caroll Poke Runyon; Rosaleen Norton; Ian Corrigan; Selena Fox; Oberon Otter Zell-Ravenheart and Morning Glory Zell-Ravenheart.