Opus ][ is a complete collection of The Byte Works’ programming tools, resources, compilers, tutorials, and documentation for the Apple II computer. Consumer applications such as the Quick Click spreadsheet, morph program, and movie player for the Apple IIGS are included, as are 35 book-length manuals and guides. Download the utilities package for $25, or with their source code (over a million lines of code!) for $40 total. Apple user group members get a 25% discount by entering the discount code during checkout.
See your user group Ambassador for discount code.
Purchase the complete collection:  https://juiced.gs/store/category/software/
This worldwide offer is ongoing.