Click on program title below to go to the website. If you have any experience with any of these, feel free to post your opinion in the Comments section. I’m landlocked at 6820 feet, and the only boating I do (rarely) is putting the inflatable canoe out onto a local lake or stream, so, I can’t really comment intelligently on the benefits/drawbacks of any of these. Got an email the other day recommending a free marine navigation software package, which reminded me that I had a bunch of those bookmarked/archived for a future post.