ICQ

Connects people for voice, chat, and video

Messaging for all devices, everywhere.

Connecting the world, one message at a time on Mac OS X. Completely free, totally open source.

Communication for businesses and healthcare providers.

Connecting worlds, one call at a time.

Open-source team communication platform.

Elevate your online communication with our innovative badge system. Say goodbye to online distractions and stay focused on what matters.

Connecting communities faster and smoother, one message at a time.

Streamlining collaboration through consistent user research communication.

Connecting young minds safely.