Automatic sound signals for dinghy races from an Android phone or tablet (laptop version due later this year). This new version can send commands to a microcontroller (eg. Arduino) to operate a horn via the USB cable. Read more on the Signals page.
Track and time boats in a race with multiple starts and easily record finishes in real time. Class and handicap results produced immediately. Designed for tablets and laptops. There is link to the app, an introductory video and more information on the Boat Timer page.
The online course board JettyMap is an app to let sailing clubs make a customised map of their buildings, race courses and other facilities using beautiful OpenStreetMap maps. Lots more info on the JettyMap page.