Buddy has a dragonfly—their Chirp sonar and down imaging are excellent
They have a unique format for saving sonar logs and other chart data. It’s the only format not supported by Reefmaster. If you have interest in making your own maps, they have their own software called Wifish
Most of the newer Raymarine depthfinders chartplotters are compatible with Navionics Sonarchart custom mapping software.
WiFish is viewing the unit display on a mobile device.
Sonar Charts Live is the Navionics mapping feature.
Vexilar Sonarphone Sonar Charts Live and Lowrance Sonar Charts Live is the same thing.