For Apple II emulation I currently use AppleWin. You can find it here: https://github.com/AppleWin/AppleWin/releases

I have and am a huge fan of the Floppy EMU.  I usually have it connected to my Apple //c with four 32MB hard drive images.  You can find it here: http://www.bigmessowires.com/floppy-emu/