The ACE ORB (TAO) is a freely available, open-source,[1] and standards-compliant real-time C++ implementation of CORBA based upon the Adaptive Communication Environment (ACE).
TAO can be downloaded from the Internet and freely used and redistributed without developer or run-time licensing costs.
Commercial support, documentation, training, and consulting for TAO are available from multiple vendors.
Many other third-party tools and services have also been integrated with TAO.
Remedy IT created an extension for TAO called TAOX11[2] which adds support for the IDL to C++11 Language Mapping to TAO.