Emulators
AppleWin
AppleWin is an Apple IIe Emulator for Windows
KEGS32
KEGS32 An Apple IIgs emulator. It is based on the Kent Dickey's KEGS for UNIX.
Virtual II
Virtual ][ is a program that emulates the vintage Apple II computer on your Mac.
Virtual ][ lets you play the old Apple games, because it supports all graphics modes, lets you control the game paddles with a USB game pad or mouse and emulates the internal speaker.
Virtual ][ requires an Intel Mac with Mac OS X 10.6 "Snow Leopard" or better.
Apple2000e
Apple2000e is an Apple 2/2e emulator for the Amiga computer. It requires a 68020 CPU or higher.
AppleIIjs
Apple AppleIIjs is an Apple II and Apple IIe emulator written entirely in JavaScript and HTML5.
It supports the most recent versions of Google Chrome, Safari, Firefox, and Opera.