About eWAS developers

The aviation weather App

GTD, a high-tech company who has been working on weather awareness applications for the last ten years, and SITAONAIR, the world's leading air transport IT and communications, launch together eWAS. The most complete aviation weather app for commercial and private aviation.

GTD: Aviation Weather App developer


GTD is a high-tech company, dedicated to the design, integration and operation of complex, mission-critical applications and systems throughout the world.

We have an experienced team which develops projects of great technical difficulty and state-of-the-art systems in the space, aeronautics and energy industries, as well as scientific facilities, critical infrastructures and maritime and port facilities.

We specialize in ground and on-board developments with a high degree of customization. We support airlines from the design stage, right through to certification.

For more than 10 years now, GTD has been working on weather awareness applications for commercial and business aviation.

Aviation Weather App develope


SITA OnAir is the world's leading specialist in air transport communications and information technology. We serve over 200 countries and territories. We bring together all the expertise needed to help airlines unleash the full potential of connected aircraft.

SITA OnAir's e-Aircraftâ„¢ 'Nose-to-Tail' solutions enable the aviation industry to enhance the passenger experience, streamline cabin and cockpit operations, and optimize maintenance and flight operation procedures.

Globally, almost every airport and airline does business with us, and it is our job to support their operations. As the world's leading air transport IT and communications specialist, we are committed to meeting the demands of the air transport industry every day, around the clock.