Alternatives to Slack
7 alternatives found
Slack is a cloud-based team communication platform founded in 2013 by Stewart Butterfield (Flickr co-founder), released from a failed gaming company (Glitch) and now the dominant business messaging tool with 42 million daily active users. Slack's channel-based model organizes conversations by topic, project, or team rather than email threads — channels persist, are searchable, and allow team members to join/leave as context demands.
Microsoft Teams
Bundled with Office 365 — 300M DAU, deeper Microsoft ecosystem integration, lower incremental cost
Google Meet
Alternative to Slack
Discord
Community and voice-first chat — Discord for developer communities; Slack for internal team workflows
Google Chat
Bundled with Google Workspace — free for G Suite teams; fewer integrations than Slack
Mattermost
Open-source self-hosted Slack alternative — full data control for regulated industries
Loom
Async video messaging — Loom for recorded video updates; Slack for real-time text and threads
Zoom
Video meetings — Zoom for synchronous video calls; Slack for async team communication
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