Ontoprise is actively involved in the W3C via the Rule Interchange Format Working Group.
The Working Group is to specify a format for rules, so they can be used across diverse systems. This format (or language) will function as an interlingua into which established and new rule languages can be mapped, allowing rules written for one application to be published, shared, and re-used in other applications and other rule engines. Because of the great variety in rule languages and rule engine technologies, this common format will take the form of a core language to be used along with a set of standard and non-standard extensions.
The Working Group is chartered to first establish the extensible core and possibly a set of extensions, and then (in Phase 2) to begin to specify additional extensions based on user requirements. These extensions need not all be combinable into a single unified language.
Current contributions by Ontoprise and others to the RIF-WG can be found at http://www.w3.org/2005/rules/wg/wiki/Enterprise_Information_Integration.