https://f-droid.org/F-Droid.apk

Nostr App

Amethyst

https://f-droid.org/en/packages/com.vitorpamplona.amethyst/

Bitcoin wallets

Phoenix Wallet

https://github.com/ACINQ/phoenix/releases

Blixt Wallet

https://github.com/hsjoberg/blixt-wallet/releases

Green Wallet

https://f-droid.org/en/packages/com.greenaddress.greenbits_android_wallet/

Simple Bitcoin Wallet

https://f-droid.org/en/packages/com.btcontract.wallet/

Mail Apps

Proton-Direct Download from website

https://proton.me/download/MailAndroid/ProtonMail-Android.apk

k-9 Mail

https://f-droid.org/en/packages/com.fsck.k9/

Tutanota

https://f-droid.org/en/packages/de.tutao.tutanota/

VPN

Mullvad

https://f-droid.org/en/packages/net.mullvad.mullvadvpn/

Youtube Client

Newpipe

https://f-droid.org/en/packages/org.schabi.newpipe/

2 factor app

Aegis

https://f-droid.org/en/packages/com.beemdevelopment.aegis/

Podcast Player

AntennaPod

https://f-droid.org/en/packages/de.danoeh.antennapod/

Simple- Contacts, Calender, Gallery, Notes

Notes

https://f-droid.org/en/packages/com.simplemobiletools.notes.pro/

Calender

https://f-droid.org/packages/com.simplemobiletools.calendar.pro/

Gallery

https://f-droid.org/packages/com.simplemobiletools.gallery.pro/

Contacts

https://f-droid.org/packages/com.simplemobiletools.contacts.pro/

Chat Clients

Telegram

https://f-droid.org/en/packages/org.telegram.messenger/

SimpleX

https://f-droid.org/en/packages/chat.simplex.app/

Password Manager

Keepass

https://f-droid.org/en/packages/com.kunzisoft.keepass.libre/