This is the ruleset for Swords and Wizardry.  This game was created by Matt Finch and was done with his blessing (Mythmere Games) .  We developed the four core books for this ruleset and they are now for sale on the Forge, 

A Fantasy Grounds Conversion for Core Rules can be found  Core Rules

This has a lot of the same functionality as my Old-School essentials rulesets with several improvements as I continue to improve my coding.  I will post a thread shortly and look forward to your feedback.

This Ruleset now Supports : WW2 Operation White Box(AAC), White Star (AAC), and Eldritch Tales (AAC)  Selection made in options menu.

A free PDF copy of the Core Rules can be found Here