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URL: https://www.phoronix.com/news/Casilda-1.0-Wayland-GTK4

⇱ Casilda 1.0 Released As Wayland Compositor Widget For GTK4 - Phoronix

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Casilda 1.0 Released As Wayland Compositor Widget For GTK4

Written by Michael Larabel in Wayland on 15 September 2025 at 09:58 AM EDT. 4 Comments
Casilda 1.0 is out today as the Wayland compositor widget for the GTK4 toolkit.

Casilda has been in development the past year as a GTK4 Wayland compositor widget that allows adding a Wayland compositor to an application window.Yeah, you can then run your own Wayland app processes within a GTK4 window.

👁 Casilda 1.0 demo


Juan Pablo Ugarte when working on a new GUI designer for GTK and wanting the ability to preview widgets in a separate process. This Wayland compositor widget builds upon the wlroots library and can handle most of the Wayland protocol.

More details on the Casilda 1.0 release and its API usage can be found via the GNOME.org GTK blog. For those interested Casilda is hosted on GNOME GitLab.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.