this post was submitted on 05 Dec 2025
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What open-source Android apps should people know about? (infosec.pub)
submitted 1 week ago by cm0002@suppo.fi to c/opensource@programming.dev
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Share your favorite open-source F-Droid apps so more users can find and enjoy them.

How to contribute:

  • Single app per comment: mention a single app per comment so popular ones are simple to find.
  • No duplicates: check existing comments first.
  • Upvote what you like: if you like an app someone shared, upvote it to help others discover it.

Let’s build a useful collection of must-have F-Droid apps!

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[–] NaibofTabr 16 points 1 week ago* (last edited 1 week ago)

NetGuard - allows you to block network traffic on a per-app basis. Basically NetGuard is a fake VPN that connects to nothing. If you switch it on for an app, the app and Android behave as if you're using a VPN and push all the network traffic for that app into NetGuard, where it goes nowhere.

HeliBoard - an open source, configurable, private, 100% offline keyboard.

Insular - an open-source fork of Island. Insular is a sandbox environment that can be used to run apps isolated from the main user profile, preventing them from accessing user files, call logs, contacts, etc.

Aegis Authenticator - an open source 2FA token manager.

Breezy Weather - a very nice weather app.