Knowledge　engineering　stems　from　E.　A.　Figenbaum＇s　proposal　in　1977,　but　it　will　enter　a　new　decade　with　the　new　challenges.　This　paper　first　summarizes　three　knowledge　engineering　experiments　we　have　undertaken　to　show　possibility　of　separating　knowledge　development　from　intelligent　software　development.　We　call　it　the　ICAX　mode　of　intelligent　application　software　generation.　The　key　of　this　mode　is　to　generate　knowledge　base,　which　is　the　source　of　intelligence　of　ICAX　software,　independently　and　parallel　to　intelligent　software　development.　That　gives　birth　to　a　new　and　more　general　concept　＂knowware＂.　Knowware　is　a　commercialized　knowledge　module　with　documentation　and　intellectual　property,　which　is　computer　operable,　but　free　of　any　built-in　control　mechanism,　meeting　some　industrial　standards　and　embeddable　in　software/hardware.　The　process　of　development,　application　and　management　of　knowware　is　called　knowware　engineering.　Two　different　knowware　life　cycle　models　are　discussed:　the　furnace　model　and　the　crystallization　model.　Knowledge　middleware　is　a　class　of　software　functioning　in　all　aspects　of　knowware　life　cycle　models.　Finally,　this　paper　also　presents　some　examples　of　building　knowware　in　the　domain　of　information　system　engineering.