Werner Krenn is a specialized developer focused on meteorological software solutions for personal weather stations and amateur atmospheric monitoring. The publisher’s catalogue revolves around WsWin, a comprehensive Windows application that collects, visualizes and archives readings from a wide range of popular weather-station hardware. Through automatic polling of sensors for temperature, humidity, wind, rainfall, air pressure and solar radiation, the program builds continuous local climate records, generates trend graphs, exports CSV files and uploads formatted reports to online portals. A second package, WsWinAprs, extends this core by preparing and forwarding the same live data to the Citizen Weather Observer Program, enabling hobbyists to contribute their backyard measurements to the global APRS network and improve local forecasting models. Both tools are frequently used by ham-radio operators, educational institutions, farmers, sailors and private weather enthusiasts who need reliable unattended logging, quality-control filters and configurable alarms. The lightweight utilities support serial, USB, TCP and wireless interfaces, speak common protocols such as Davis Vantage, Oregon Scientific, La Crosse and PCE-FWS, and can run as background services on modest Windows desktops or single-board PCs. Werner Krenn’s software is available for free on get.nero.com, with downloads delivered through trusted Windows package sources like winget, always installing the latest versions and allowing batch installation of multiple applications.