Communication

VoIP User Agent app for Android based on baresip SIP library

⬇47 K+

Group messenger - encrypted messaging, group chat and video calls

⬇817 K+

Encrypted p2p team chat with no servers build on Tor, alternative to Slack and Discord

⬇106+

Encrypted chat over e-mail (Delta Chat client)

⬇53 K+

Fastest ever Matrix client

⬇408 K+

Encrypted mesh chat over Wi-Fi Aware & Bluetooth — no internet, no servers.

⬇710+

Private BYOK AI chat. 11 providers, voice, image, export. 3 languages.

⬇604+

Sync Proton Mail contacts into the Android system address book.

⬇375+

Experimental Matrix client made using Compose Multiplatform (and Rust).

⬇4 K+

一款功能强大的批量短信发送工具。

⬇4 K+

Post-quantum file & message encryption with age. On-device, private, no ads.

⬇934+

Remove tracking from URLs, expand short links & protect privacy

⬇2 K+

Force ringtone for VIP contacts even in Silent/DND mode

⬇253+

Have private video calls and chat using your own server.

⬇127 K+

Send messages, not metadata. No ads or trackers — only private messaging

⬇235 K+

ChatterUI is a native mobile LLM AI frontend

⬇76 K+

Thunderbird is a 100% open source, privacy focused email app.

⬇1.1 M+

Full-featured email client

⬇1.4 M+

WebView wrapper for Mistral Le Chat with URL blocking and privacy features

⬇1 K+

End-to-end encryption for any messenger, over any channel

⬇628+

Privacy-first SMS app with smart inbox, finance dashboard and bill reminders

⬇982+

Stream video/audio between two phones. Zero configuration.

⬇17 K+

XMPP/Jabber client with encrypted instant messaging and video calls

⬇1 K+

Mail app that sparks joy

⬇284+

Telegram is a messaging app with a focus on speed and security.

⬇26 K+

Anonymous Email Forwarding

⬇44 K+

Encrypted, easy-to-use XMPP instant messenger for your mobile device

⬇135 K+

Email Notification without Google Play Services

⬇9 K+

Encrypted email & calendar service - easy to use, secure by design.

⬇821 K+

TRIfA Tox Client

⬇53 K+