Gnirehtet provides reverse tethering for Android

A WireGuard client, an OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.

Get Android App Updates Directly From the Source.
Obtainium allows you to install and update Apps directly from their releases pages, and receive notifications when new releases are made available.

This is a no-nonsense RSS/Atom/JSON feed reader app for Android.

The Universal Radio Hacker (URH) is a complete suite for wireless protocol investigation with native support for many common Software Defined Radios.