Is there an online name demangler for C++?

I have created such an online serivice: https://demangler.com

This is a gcc c++ symbol demangler. You just copy a stack trace, or the output of nm into a text box, and it will return the output with the names demangled.

@Update: It now demangles MSVC and Java symbols also.

This might be a bit late, but I created one, based on this question. It works with the inputs I tried on, supports g++ and msvc++ via __cxa_demangle and __unDName, compiled to Javascript via Emscripten. Hope this helps someone: c++filtjs

Edit: Fixed escaping problem