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FOSS Energy Efficiency Project (FEEP)

How can you measure software's energy consumption? And does it make a difference? We are working to make free software more sustainable.

Blauer Engel For FOSS (BE4FOSS)

Eco-labels for products are used widely already. But how can they be transferred to software? What criteria is relevant? We need more pioneers to find out how we can make software sustainable.

KDE Eco -

KDE supports the FEEP and BE4FOSS programs to help free and open source communities produce more environmentally friendly software. The projects provide communities with guidelines and support to optimize software to be more energy efficient and have a longer life-span.

Let’s make energy efficient software and digital sustainability part of our community! We can live up to our responsibility for this and future generations!

Okular Awarded Blue Angel Ecolabel

Okular Awarded Blue Angel Ecolabel

In 2022, KDE's popular multi-platform PDF reader and universal document viewer Okular became the first ever eco-certified computer program!   Read More

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Join us for a sustainable software development movement!


The BE4FOSS Project was funded by the Federal Environment Agency and the Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMUV). The funds are made available by resolution of the German Bundestag.

The publisher is responsible for the content of this publication.

Image of BMUV/UBA

Image of BMUV/UBA