I have just searched the forum and the most recent discussions that I can find on this topic appear to be from around ten years ago. The consensus then was for Coastal Explorer (to run on Windows).
Is Coastal Explorer still the go to option?
Sub question: what is the difference in using vector or raster scan charts?
We've been using an old version (2.something) of MaxSea Time Zero on our ship's laptop for approx 13 years... specifically at first because it was an 'almost mirror" of the Furuno NAVnet 3D MFD we installed on the previous boat circa 2009.
Ours is not connected to boat sensors, and only uses a dedicated GPS puck. Usually lives in the main cabin. Its intended use is for planning and back-up; works fine for that, even without additional sensors. Not as modern as the newer version Iggy describes; we'd have to use a flash drive to transfer newly-planned routes from our home computer (license) to the boat laptop (license). Not particularly difficult.
My intention is to upgrade to a newer TZ version whenever the current 2010 laptop needs replacing... can't tell yet when that might happen.
Can't comment on Coastal Explorer.
The Furuno MFDs and TZ support both NOAA vector and NOAA raster charts (latter being pictures of paper charts), as well as some other commercial vector charts like C-Map. I've been more familiar (comfortable) with raster charts, and used vector less often. These days, I'm weening myself from that... focusing more and more on vector charts... since NOAA wont be supporting raster charts in the future. I'm finding two different zoom levels side by side helps deal with some of that "hidden data at various zoom levels" issue.
I expect I'll still like having a copy of at least the most recent/last updated raster charts of a given area though... I've been using them for such a long time that vector charts still just seem a little weird, In my mind, not (yet?) really a representation of the area...
FWIW, we also use AquaMap on tablets as a backup on the bridge. It's a decent nav app, but also specifically because it can include USACE survey data, which is useful along the AICW. And for now, we can also simultaneously run both NOAA vector/raster charts and Garmin vector charts on our two current MFDs. (The Garmin system came with the boat; we usually dedicate it to radar displays, though.)
-Chris