jWrap parses C/C++ headers or source in order to automatically produce a C/C++ glue stub that can be linked with your component library to produce a loadable Tcl extension.
jWrap uses Tcl 8 object representation very heavily. The author claims that the resulting code is faster than similar mechanisms such as SWIG or cTest. jWrap allows jTcl to overload C++ methods or a C++ program to call jTcl methods with no modification to the C++ code. Binary versions for Linux, Win32 and Solaris are available.