Is there a C++ gdb GUI for Linux?

Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++?

In detail: As someone who has spent a lot of time programming in Windows, one of the larger stumbling blocks I've found whenever I have to code C++ in Linux is that debugging anything using commandline gdb takes me several times longer than it does in Visual Studio, and it does not seem to be getting better with practice. Some things are just easier or faster to express graphically.

Specifically, I'm looking for a GUI that:

• Handles all the basics like stepping over & into code, watch variables and breakpoints
• Understands and can display the contents of complex & nested C++ data types
• Doesn't get confused by and preferably can intelligently step through templated code and data structures while displaying relevant information such as the parameter types
• Can handle threaded applications and switch between different threads to step through or view the state of
• Can handle attaching to an already-started process or reading a core dump, in addition to starting the program up in gdb

If such a program does not exist, then I'd like to hear about experiences people have had with programs that meet at least some of the bullet points. Does anyone have any recommendations?

Edit:
Listing out the possibilities is great, and I'll take what I can get, but it would be even more helpful if you could include in your responses:
(a) Whether or not you've actually used this GUI and if so, what positive/negative feedback you have about it.
(b) If you know, which of the above-mentioned features are/aren't supported

Lists are easy to come by, sites like this are great because you can get an idea of people's personal experiences with applications.

You won't find anything overlaying GDB which can compete with the raw power of the Visual Studio debugger. It's just too powerful, and it's just too well integrated inside the IDE.

For a Linux alternative, try DDD if free software is your thing.