Best Instant Messaging Products in 2025

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Key Telegram features:

Privacy and Security Multi-Platform Support Cloud Storage Large Group Chats

Open Source

FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun. .

Key FlexiQuiz features:

Question bank Groups Courses Add media

Try for free freemium $25.0 / Monthly (Essentials plan)

Fast, simple & secure messaging. Privacy that fits in your pocket.

Key Signal features:

End-to-End Encryption Open Source User Privacy Cross-Platform Availability

Open Source

Matrix is an open standard for decentralized persistent communication over IP.

Key Matrix.org features:

Decentralization Interoperability End-to-End Encryption Open-Source

Open Source

Secure messaging, anywhere.

Key Briar features:

Privacy-focused Decentralized Peer-to-peer Communication Open-source

Open Source

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

Key WhatsApp features:

End-to-End Encryption Cross-Platform Availability Cost-Effective Wide Adoption

free

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.

Key Element.io features:

Open Source Privacy and Security Interoperability Rich Feature Set

Open Source free

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Key Tox features:

Privacy-Focused Decentralized Open Source Cross-Platform

Open Source

Vocaroo is a quick and easy way to share voice messages over the interwebs.

Key Vocaroo features:

Easy to Use No Account Required Quick Sharing Free Service

A Mobile Ethereum OS.

Key Status.im features:

Decentralization Security Open Source Web3 Integration

Open Source

Messaging and SMS app bundled in stock Android.

Key Messages by Google features:

Cross-Platform Compatibility RCS Support Integration with Google Services Smart Replies

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Key mySMS features:

Cross-device synchronization Cloud backup Web and desktop applications Group messaging

A messaging app for teams who see through the Earth!

Key Slack features:

Real-Time Communication Channel Organization Integration Capabilities Search Functionality

Mattermost is an open source alternative to Slack.

Key Mattermost features:

Open Source Security Flexibility Team Collaboration

Open Source