Martian SlingShot
www.martian.com/SlingShot.html
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Just use SlingShot to Publish your stuff from one Mac, and then use SlingShot on your other Mac to Subscribe. Tell SlingShot how often to check for updates, and you're all set...SlingShot will silently work in the background keeping all your bits in line.