Unofficial F-Droid Catalog

VoIP User Agent app for Android based on baresip SIP library

VoIP User Agent app for Android based on baresip SIP library

A geeky and efficient [matrix] client for power users

Make a call when receiving a defined SMS

Share, freely and privately

Spam Call/SMS blocker

Phone with API

Secure messenger for Matrix with a traditional instant messaging experience

Locate and control your device remotely

Open-source and Ad-free SMS/MMS messaging app

Group messenger - encrypted messaging, group chat and video calls

Chat with your friends with FluffyChat.

Popular Android messaging app for VoIP.ms, a Canadian VoIP provider

Filter Sms Messages and Automate Your Device

Voice- and video phone App for off-the-grid scenarios.

Companion app for the JMP eSIM Adapter

Chat on the Jabber network (XMPP protocol); focus on features for gateway users

Deku is an SMS app that supports end to end encryption and photo sharing

Unlock a secure, open-source calling experience with Fossify Phone

Wire offers highly secure communication – anywhere and anytime.

Track, Analyze, and Manage Your Calls

SimpleX Chat - e2e encrypted messenger without any user IDs - private by design!

Protect your privacy with encrypted phone calls.

Encrypted private messenger

A different database for contacts to keep them private only to you.

Block spoofed calls

Start a WhatsApp, Signal or Telegram chat without saving a number as a contact

Manage your contacts privately and efficiently with vCard support

The Foehnix weather widget aims at helping pilots with weather conditions

Instant video conferences efficiently adapting to your scale