There are a lot of people who have been key, at least in hindsight, to my development.
I haven't really thought about populating this topic, but at a glance..
I just now learned that Karen Kenworthy, the author of a great number of excellent tools, is dead. All my heroes are dying.
A straightforward mirroring tool, with scheduling, exclusion and other useful features.
Instead of fucking around with some sort of special utility, Karen's Replicator just does the job. I believe this was my first introduction to her software.
As the author is deceased, Joe Winett has taken over its updates.