You can make the "visited" filter in the GalMap work that way with EDSM data, if you use the Visited Stars Cache, with the caveats that you'll have to occasionally update it to stay current, and that only shows what EDSM knows about, so there can still be pre-discovered systems that will show as unvisited. But it helps.... a lot.
I set up an account with EDSM and thought that by using my ED username that it would autmajically start helping me track my journey but No. and then when doing cursory google searches and looking at the EDSM site there is no clear and concise instructions on how to get this done. So I gave up.
is this easier to implement?
thanks all