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If you're using Android on some phone or tablet and you're not using #fdroid yet, do yourself a favor and install it.

It's an alternative appstore with purely OSS software apps. Overall improved security and privacy on your mobile device (alternative apps for pretty much everything are available, with reduced tracking, no ads, no backdoors, reproducible builds, and so on).

Website: https://f-droid.org/

Also follow @fdroidorg while you're at it.