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Foss TV Remote Control App
(lemmy.ml)
F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
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I will try out KDE Connect, thank you!
Maybe relevant:
https://www.reddit.com/r/kde/comments/joul65/kdeconnect_on_android_tv/