3CX

Full-featured PABX system, with call queues, built-in web

Chat & Communication Medium setup ⊘ Proprietary

Full-featured PABX system, with call queues, built-in web conferencing, live chat and social media messaging all on one system.

Strengths

10 head-to-head comparisons.

Open-source customer engagement and live-chat platform

Replaces Intercom, Zendesk

Private messenger without any user identifiers

Replaces Signal, WhatsApp

Real-time collaborative document editor

Replaces Google Docs

Scalable real-time messaging server for apps and websites

Replaces Pusher, Firebase Realtime Database

Screen sharing for developers

Conversational app builder (alternative to Typeform and Landbot)