Slack is a popular team messaging hub, but many teams also need built‑in video calling without extra cost. Below are 20 free‑tier video‑conferencing platforms that can replace or complement Slack’s huddle and call features.
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Industry‑standard video meetings with up to 100 participants, 40‑minute limit on group calls in the free plan, screen sharing, virtual backgrounds, and breakout rooms.
Free video meetings for anyone with a Google account; supports up to 100 participants, 60‑minute limit, real‑time captions, and integration with Google Calendar and Drive.
Collaboration hub offering unlimited chat, video calls up to 60 minutes, screen sharing, and up to 100 participants per meeting, plus integration with Office online apps.
Open‑source, no‑account‑required video conferencing with end‑to‑end encryption, unlimited participants, screen sharing, and easy embed on websites.
Secure video meetings for up to 100 participants, 50‑minute limit, HD video, whiteboard, and integration with calendar apps.
Classic Microsoft video chat supporting up to 50 participants, screen sharing, live subtitles, and call recording—all free with a Microsoft account.
Browser‑based video rooms with up to 4 participants in the free plan, no downloads required, and simple link sharing.
Free tier allows unlimited 1‑to‑1 meetings and up to 100 participants for webinars, with screen sharing, recording, and integration with Zoho apps.
Open‑source web conferencing designed for online learning; supports real‑time sharing of audio, video, slides, chat, and breakout rooms.
Gaming‑originated platform offering free voice and video channels, screen share, and up to 25 participants per video call, plus persistent text chat.
Free conference calling with up to 10 participants, HD video, screen sharing, and call recording; integrates with Google Calendar and Outlook.
Simple, no‑login video chat for up to 4 participants, with screen sharing and instant link generation.
Free tier provides unlimited one‑to‑one video calls, up to 15 participants for group meetings, screen sharing, and calendar integration.
Free service for up to 1000 participants in a conference, with video, screen sharing, and dial‑in phone numbers.
Free plan supports up to 25 participants per meeting, HD video, screen sharing, and meeting recording.
Free tier offers unlimited 1‑to‑1 meetings and up to 100 participants for group calls, with screen sharing and real‑time chat.
14‑day free trial granting full access to GoToMeeting’s video conferencing features, up to 250 participants, HD video, and recording.
30‑day free trial offering high‑definition video meetings for up to 100 participants, screen sharing, and Dolby Voice audio.
30‑day trial with full-featured web conferencing: up to 100 participants, breakout rooms, polls, and extensive customization.
Open‑source video chat integrated into Nextcloud file‑sharing platform; supports unlimited participants, end‑to‑end encryption, and screen sharing.