The first step towards your liberation. An Android system without Google.

To access the following apps except Firefox and VLC which you'll have to download via your web browser.

Replace Google store in case you still want to get APKs from it. Apps tightly integrating Google services won't work.

https://en.wikipedia.org/wiki/KISS_principle

Not Google/MS-based keyboard.

If you want special keys instead of AnySoft Keyboard

GPLv3 and support to the dev through a premium mode to program SMS.

Once telemetry disabled in the settings, and privacy/security addons installed, you're good to go on the Web.

A ton of options for your camera. Doesn't include filters because you're so perfect already.

Navigation with an enhanced OpenStreetMap. Lots of options to tweak.

Does the job.

Browse and edit photos.

Don't forget to sync with DAVdroid.

Sync calendars and contacts with a DAV server. For instance a Nextcloud account.

PDF reader

Doc reader

Save your eyes if your system doesn't provide a red dimming filter already.

Mail client. Prefer the K-9 Material fork.

To tinker.

Best non-root firewall. Behaves as a VPN.

VPN your phone or apps through TOR.

Blocks ads on apps. Requires root. Prefer DNS66 if you don't feel like tweaking.

Block adds and more without root required.

Manage your passwords securely.

FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols with support for Android (6 or later) and iOS (11 or later). Tokens can be added easily by scanning a QR-code or by manually entering in the token configuration.

Best FLOSS app to take notes, back them up. Despite the Google+ use from the developers, it's GPLv3 and non-corporate.

To sync files between your devices wihout Nextcloud.

A libre cloud for your files, calendars, contacts, etc. Can host video call groups and many more too.

To video chat on Nextcloud, based on Jitsi meet.

Beta client for TOX, a highly secure decentralized instant messaging with video calls, files transfers, etc.

To access Matrix/Riot decentralized secure chats.

Libre multimedia player by excellence.

Accountless app for non-free Youtube and Soundcloud. You can download, subscribe, listen in the background, etc.

If your computer runs on Linux with a KDE desktop, this is most useful.

LibreTorrent is a Free as in Freedom torrent client for Android 4 and later, based on libtorrent. Download and share files directly on your device.

Listen to any radio in the world.

Access non-free Reddit.

Mastodon client.