Signal is widely regarded as the gold standard for secure messaging. It offers end-to-end encryption for messages, calls, and even video chats. Signal’s open-source protocol ensures transparency, and it collects minimal user data, keeping privacy at the forefront

With a focus on privacy, Telegram offers encrypted chats, self-destructing messages, and large file-sharing capabilities. Its secret chats feature guarantees end-to-end encryption, ensuring data privacy while giving users access to channels and bots for added functionality

Known for its massive user base, WhatsApp uses end-to-end encryption by default for all messages, calls, and media shared across its platform. Owned by Meta, it has integrated privacy features like two-step verification to secure accounts further

Threema is a lesser-known but highly secure app that prioritizes privacy by not requiring users to register with a phone number or email. It offers end-to-end encryption and doesn’t store any metadata, making it extremely privacy-conscious​

A business-focused messaging app, Wire combines security with modern team collaboration features. It offers end-to-end encryption for text, voice, and video messages. With GDPR compliance and enterprise-grade security, it's a top choice for professionals

Viber offers end-to-end encryption for private messages and calls and even features a "hidden chats" option for added privacy. It supports two-step authentication and self-destructing messages for extra layers of protection

Wickr Me focuses on anonymous and secure communications, with strong encryption for messages, voice calls, and file sharing. The app features self-destructing messages and leaves no digital footprint, making it ideal for those requiring extreme privacy

Silence is a simple, open-source SMS/MMS encryption app. It encrypts text messages locally and during transmission, offering a secure alternative to regular SMS apps. It’s perfect for users who want SMS encryption without the need for internet​

Dust is a secure messaging app with a focus on data control. Messages disappear after being read or after 24 hours. It doesn’t store messages on servers, ensuring user data is wiped and untraceable​

Apple’s iMessage is well-known for its end-to-end encryption, but it's only available on Apple devices. It also features additional security features, such as biometric authentication, for accessing messages on iPhones or Macs