Most compilers are free, are you having trouble finding one? MSVC, MinGW, clang, gcc, etc. (clang has good C++11 support, on Windows you can use the "experimental" version for MinGW)
There's also online compilers: http://ideone.com/ http://sourcelair.com/
@MrJake: Dev C++ is outdated and generally deprecated, Code::Blocks is somewhat bloaty, I didn't know Eclipse did C++, and Notepad++ is not a compiler.