Signal boosting this for people who may not know about it: http://www.visitedstarscache.space/
This gives you a 'visited stars' cache file which contains all the stars that are in the EDSM database (and therefore, have been visited). After adding it to your game, you can use the 'Visited Stars' filter in the route planner to only go to un-explored stars. Use "Visited Stars" -> Not Visited enabled, Visited disabled, Apply Filter to Route enabled.
I do notice my ED game process using more memory, but unless you're on a very low configuration system, you should be ok. This is an excellent way for explorers to make sure they're hitting as many new stars as possible!
This gives you a 'visited stars' cache file which contains all the stars that are in the EDSM database (and therefore, have been visited). After adding it to your game, you can use the 'Visited Stars' filter in the route planner to only go to un-explored stars. Use "Visited Stars" -> Not Visited enabled, Visited disabled, Apply Filter to Route enabled.
I do notice my ED game process using more memory, but unless you're on a very low configuration system, you should be ok. This is an excellent way for explorers to make sure they're hitting as many new stars as possible!