LK is an open-source flight planner for hang gliders, paragliders, and general aviation. It is developed by a team of people based in Switzerland, Austria, Germany, Poland, and the UK.

LK is available as a web application, a desktop application for Windows and Mac OS X, as well as an Android and iOS application. It can be used with Waypoint Map, which is an open-source map editor developed by the same team as LK.

LK is an application for creating and editing flight plans for hang gliders, paragliders, and general aviation. It allows you to plan your flight by drawing paths on a map. It is a very intuitive tool that is easy to learn and use.

LK is a project of the LK Open Community. The main goal of the project is to develop a tool that is useful for everyone, no matter if you are a professional pilot or just starting in the aviation world.