Recommendations MBR & Partition Table Editors?

[KenO]

Would like to learn more about and use MBR and Partition Table Editors.

Have checked the wiki for each but only found info info for Master boot record https://en.wikipedia.org/wiki/Master_boot_record &
Partition table https://en.wikipedia.org/wiki/Partition_table even when used "..." (example "MBR Editors wiki").

Appreciate any recommendations!

Thanks

Ken