Alternatives to RingCentral Classic

Team messaging, video meetings, and business phone

Communications application with voice, video, chat, and web conferencing

Meet, chat, call, and collaborate in just one place

Team communication and collaboration software

Voice and text chat software

Video communication and virtual meeting platform

Messaging and calling application

Video communication and virtual meeting platform

Universal chat app powered by Matrix

Free messaging and calling application

Open-source, self-hosted Slack-alternative

Calling and messaging application focusing on security