BIMForum supports the US chapter of buildingSMART International and promotes the use of open BIM standards in our industry.
What is “openBIM?”
From buildingSMART International: https://www.buildingsmart.org/standards/
openBIM is a universal approach to the collaborative design, realization and operation of buildings based on open standards and workflows. openBIM is an initiative of buildingSMART and several leading software vendors using the open buildingSMART Data Model.
OpenBIM is the gateway to completely modernizing our industry with seamless digital exchange of information that is secure and sensitive to the context of each stakeholder in the design, construction and operation of infrastructure and facilities.