FileMaker Pro version comparison
https://support.claris.com/s/article/FileMaker-Pro-Version-Comparison?language=en_US
FileMaker Server version comparison
https://support.claris.com/s/article/FileMaker-Server-Version-Comparison?language=en_US
New between versions of FileMaker 19
FileMaker Pro System Requirements and Compatibility Comparison
https://support.claris.com/s/article/FileMaker-Pro-operating-system-requirements-all-versions-1503692917754?language=en_US