Joystick Mapper

https://joystickmapper.com
OS X / Mac gamepad remapper, primarily from gamepad to keyboard/mouse
Available through the Mac App Store for $4.99
Single dev, last update in 2019, forums show old posts
Basic presets support, no support for output devices

This Mac / OS X only application does not appear to be in active development. There are a few user presets for specific games but with limited usefulness.