Giao tiếp

Forward SMS, calls, and battery alerts to Telegram, ntfy, email, or SMS

⬇2 K+

Private email app with end-to-end encryption, aliases, and custom domains

⬇864+

Mail app that sparks joy

⬇284+

Tor companion plugin that routes Mercurygram traffic through the Tor network

⬇5 K+

Tamper-evident incident journal with encrypted, self-proving exports

⬇76+

A tiny Discord for two, on your own server: a permanent voice and video channel.

⬇0+

Real-time messaging client with text and file sharing.

⬇18+

Offline and encrypted contact backups

⬇488+

Simple, private SMS messaging. Offline-first, no ads, no tracking.

⬇519+

Privacy super app with messenger, crypto wallet, browser, communities & more

⬇3 K+

Anonymous, end-to-end encrypted 1:1 chat over Tor

⬇181+

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

⬇982+

Read and send SMS from your computer via your phone.

⬇29+

Decentralized messaging for high-threat environments

⬇495+

Control your Bose QC Ultra 2 directly — no Bose app, no cloud, no account.

⬇55+

Sync Proton Mail contacts into the Android system address book.

⬇375+

Native IRC client with a modern chat interface

⬇927+

Schedule your SMS in advance, without replacing your default messaging app.

⬇0+

View, save and share statuses from WhatsApp, fully offline.

⬇42+

Self-destructing encrypted notes. The recipient just opens a link.

⬇149+

Offline voice-message transcription, fully on-device

⬇1 K+

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

⬇934+

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

⬇710+

A secure, offline-first message encryption tool for Android.

★5.0 ⬇147+

A clean, high-fidelity Gmail-inspired client for Resend.com.

⬇48+

Replace your email, messenger, and calendar with one app.

⬇173+

Private, offline phone & contacts app that helps you keep up your bonds

⬇30+

Nhắn tin không cần tài khoản, với mã hóa & kết nối trực tiếp

⬇0+

Unlock a secure, open-source calling experience with NovaDialer

⬇1 K+

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

⬇628+