HomeAppsMaps & NavigationOpenCPNApps like OpenCPN Here are some great alternatives to OpenCPN by Dave Register : i-Boating:Marine Navigation ★4.2 NavMonitor ★5.0 Weather - Routing - Navigation ★4.6 Pro Weather Routing Navigation ★4.8 Imray Navigator ★3.8 mKart Marine Navigation ★3.4 Simrad: Companion for Boaters ★3.8 AIS Flytomap GPS Chart Plotter ★4.4 Garmin ActiveCaptain® ★4.4 NetGPS ★4.1 C-MAP Boating ★4.1 Memory-Map ★3.8 Navigraph Charts ★4.7 GPX Viewer ★4.3 GPX Viewer PRO ★4.4 Bluetooth GPS Output ★4.1