Rich is stuck in 32-bit land.
First on my list are a handful of 32-bit apps. macOS Mojave is the last macOS that will run 32-bit apps. macOS Catalina is 64-bit only. My Mac is home to perhaps a dozen 32-bit apps that have not been replaced by 64-bit versions.
I could install Parallels on my Macs and run macOS Mojave and the 32-bit apps inside macOS Catalina. I could bite the bullet and buy Adobe’s Photoshop Elements– which has many of the same features as Fireworks, but a whole new workflow to learn– which is less expensive than a monthly lifelong subscription to Photoshop.
Sometimes we just have to move on.