The best alternatives to Satta are FloydHub, Today Scripts, and Kindle2Notion. If these 3 options don't work for you, we've listed a few more alternatives below.
Today Scripts is a widget for running scripts in macOS's notification center. Make your Today View useful. Bash, python, ruby, even apple scripts. This open source app is made by SamRothCA 4 years ago. Now I made it works on the latest macOS.
A Python package to copy all your Kindle highlights and notes to a database in Notion. Plug in your Kindle device to your PC to run this script. Requires Python 3.9+ installed on your system.