Below is the hyperlink to the developers, thanks to GSWorldView's information

Name Hyperlink Brief description
Chris Torrence CT6502 https://ct6502.org Chris Torrence site Assembly lines, shopping and knowledge resource
Apple II Haven https://www.a2heaven.com Lots of Apple ][ series hardware
ReActiveMicro.com - Apple II and 8/16bit Hardware https://www.reactivemicro.com Now have lot of different vendors and lot of new products
Apple II History http://apple2history.org Check out the history of Apple][
Apple II Developers at Work http://apple2.org.za/gswv/a2zine/Sel/A2DevelopersAtWork.htm See who's still working on Apple][
Apple II FAQs Main Hall http://home.swbell.net/rubywand/A2FAQs5MAINHALL.html Frequently Asked Questions