OpenQuest, which SimpleQuest is based on, currently uses OGL version 1.0a to provide a license for 3rd party developers to use it for their books. Games such as Age of Shadow (Crooked Staff Publishing), Clockwork and Chivalry (Cakebread and Walton) and Jackals (Osprey Games). The first edition of OpenQuest was based on Mongoose Legend, which shares many system similarities with Chaosium INCs BRP but was written from the ground up.
OpenQuest has gone through many revisions since its first release over a decade ago, and with the controversy around WotC’s leaked plans for OGL 1.1, I think it is safest to drop the OGL, which on reflection, is no longer needed.
This means that all the currently available OpenQuest books will have their Legal Appendixes (the one or two pages containing the OGL declaration) removed soon. Future OpenQuest releases, and books from the upcoming SimpleQuest line, will no longer carry the OGL declaration.
So that third-party developers can use to release their own OpenQuest-based material, I will update the OpenQuest SRD, to replace the OGL with a Creative Commons license that gives the same rights that are currently enjoyed.
If you are a publisher using OpenQuest and have questions about this, don’t hesitate to contact me via email.