Trusted Solaris has been around for a few years longer than SELinux. And, as a complete product rather than a do-it-yourself add-on, it boasts a greater integration level of trusted features than SELinux does. Also, unlike SELinux, which is currently best-suited for server deployments, the access controls in Trusted Solaris extend to the desktop environment.
Trusted Solaris 8
Sun's Trusted Solaris 8 builds on the vendor's Solaris foundation with stronger access controls and support for multilevel data separation that extends from the core to the desktop environment.