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Best Slack Alternatives in 2025
Compare top team communication alternatives to Slack with transparent pricing and honest reviews.
1
Microsoft Teams
Best AlternativeTeam chat integrated with Microsoft 365. Enterprise standard.
Office integrationVideo callsFree tierChannels
4.4
Free / $4/user/mo
2
Discord
Community and team chat. Great for developer communities.
FreeVoice channelsScreen shareBots
4.6
Free / $2.99/mo
3
Google Chat
Team messaging in Google Workspace. Simple and integrated.
Workspace integrationSpacesMeet integrationSearch
4.2
Free with Workspace
4
Mattermost
Open-source Slack alternative. Self-host option available.
Open sourceSelf-hostSecurityDevOps integrations
4.4
Free / $10/user/mo
5
Rocket.Chat
Open-source team chat. Full control with self-hosting.
Open sourceSelf-hostFederationWhite-label
4.3
Free / $4/user/mo