What is a System Reference Document (SRD)?
Often when someone says SRD they are referencing the original SRD, which is a series of Rich Text Format documents, at the Wizards of the Coast (WotC) website, used as a set of reference role playing game mechanics licensed under the OGL by WotC based upon their Dungeons and Dragons 3rd edition RPG. However, any OGL publisher can make an SRD, but few do, or at least few offer them for free. The only major twenty-sider, non-WotC, OGL game that has been published as a free SRD is Anime d20 by Guardians of Order, which is based up their Big Eyes Small Mouth d20 RPG. YourOGL will make a free SRD available online as a series of Rich Text Format documents.
