Top 20 Alternatives to Slack (Calls) in Meeting Software

Integrated with Office 365, Teams offers high‑quality video calls, screen sharing, meeting recordings, and deep collaboration tools.

Industry‑standard video conferencing with breakout rooms, webinars, and large‑scale meeting support up to 1,000 participants.

Browser‑based video meetings built into Google Workspace, featuring real‑time captions, live streaming, and seamless calendar integration.

Enterprise‑grade video conferencing with advanced security, AI‑powered meeting assistance, and robust integration options.

Simple, reliable online meetings with HD video, screen sharing, and integrated scheduling tools.

Cloud‑native video conferencing with Dolby Voice audio, meeting analytics, and cross‑platform support.

Unified communications suite offering video meetings, team messaging, and phone system integration.

Team messaging app with built‑in voice and video calling, screen sharing, and collaborative whiteboards.

Lightweight team chat with instant video calls, screen sharing, and AI‑driven task management.

Open‑source Slack alternative that adds secure video conferencing via integrations like Jitsi.

Self‑hosted communication platform offering voice/video calls through WebRTC and extensive customization.

Originally for gamers, now used by teams for voice channels, video calls, and screen sharing with low latency.

Browser‑only video meetings with no downloads, easy room links, and built‑in recording.

Free, open‑source video conferencing that runs in the browser, supports unlimited participants, and can be self‑hosted.

Webinar and online meeting solution integrated with Zoho’s suite of business apps.

Secure, scalable meetings with video, voice, chat, and screen sharing, integrated with AWS services.

Voice‑first communications platform offering HD video calls, AI transcription, and real‑time call analytics.

High‑definition video conferencing hardware and cloud service with enterprise‑grade security.

Secure video meetings with screen sharing, meeting recordings, and integration into the 8x8 cloud communications suite.

Webinar‑focused platform that also supports interactive meetings, polls, and breakout rooms.