isr.co.ro : glossary ActiveX Microsoft's designation for the firm's group of object-oriented technologies for adding dynamic features to Web pages and related online presentations. At least in theory, it should provide an alternative to the Java language developed by Sun Microsystems. So far, ActiveX technology is supported mostly by Microsoft's own Internet Explorer series of browsers and by a small number of programs from independent developers. But Microsoft has identified this as a strategic technology and promised to invest the resources necessary to make it a standard.