binjgb is a simple Game Boy / Game Boy Color emulator. It is a command line program but drag and drop works well.
Requires CMake and SDL2. Debugger uses dear imgui, (included as a git submodule).
If you run make, it will run CMake for you and put the output in the bin/ directory.
$ make
$ bin/binjgb foo.gb
You can also just use cmake directly:
$ mkdir build
$ cd build
$ cmake ..
$ make