▁Bruce ▁Per ens , ▁and ▁others . ▁ ▁The ▁group ▁adopted ▁the ▁Open ▁Source ▁Definition ▁for ▁open - source ▁software , ▁based ▁on ▁the ▁Deb ian ▁Free ▁Software ▁Gu idel ines . ▁They ▁also ▁established ▁the ▁Open ▁Source ▁In iti ative ▁( OS I ) ▁as ▁a ▁ste ward ▁organization ▁for ▁the ▁movement . ▁However , ▁they ▁were ▁un success ful ▁in ▁their ▁attempt ▁to ▁secure ▁a ▁tra dem ark ▁for ▁' open ▁source ' ▁to ▁control ▁the ▁use ▁of ▁the ▁term . ▁ ▁In ▁ 2 0 0 8 , ▁in ▁an ▁apparent ▁effort ▁to ▁reform ▁govern ance ▁of ▁the ▁organization , ▁the ▁O SI ▁Board ▁invited ▁ 5 0 ▁individuals ▁to ▁join ▁a ▁" Ch arter ▁M embers " ▁group ; ▁by ▁ 2 6 ▁July ▁ 2 0 0 8 , ▁ 4 2 ▁of ▁the ▁original ▁inv ite es ▁had ▁accepted ▁the ▁inv itations . ▁The ▁full ▁membership ▁of ▁the ▁Char ter ▁M embers ▁has ▁never ▁been ▁public ly ▁revealed , ▁and ▁the ▁Char ter ▁M embers ▁group ▁communic ated ▁by ▁way ▁of ▁a ▁closed - sub scription ▁ma iling ▁list , ▁" osi - dis cuss ", ▁with ▁non - public ▁arch ives . ▁▁ ▁In ▁ 2 0 1 2 , ▁under ▁the ▁leadership ▁of ▁O SI ▁director ▁and ▁then - pres ident ▁Simon ▁Ph ipp s , ▁the ▁O SI ▁began ▁transition ing ▁towards ▁a ▁membership - based ▁govern ance ▁structure . ▁The ▁O SI ▁initi ated ▁an ▁Aff ili ate ▁M emb ership ▁program ▁for