The Great Net Spellbook (GNSB) is a homemade collection and compilation of spells, submitted by fans, for Advanced Dungeons & Dragons (2nd Edition). The book was originally a collection of homemade spells collected from the Usenet group rec.games.frp.dnd. However, as time progressed and the world-wide web became more popular, spells were submitted and collected from a wide variety of places.
The GNSB has gone through 6 editions, each one being thoroughly checked for licensing and copyright validations and each edition adding its own unique. The last edition came out in 1995 with over 1800 spells available for use.