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Best Slack Alternatives in 2026
Compare top team communication alternatives to Slack with transparent pricing and independent rankings.
1
Microsoft Teams
Best AlternativeTeam chat integrated with Microsoft 365. Enterprise standard.
Office integrationVideo callsFree tierChannels
Free / from $4.00/user/mo billed annually
2
Discord
Community and team chat. Great for developer communities.
FreeVoice channelsScreen shareBots
Free / $2.99/mo
3
Google Chat
Team messaging in Google Workspace. Simple and integrated.
Workspace integrationSpacesMeet integrationSearch
Free with Workspace
4
Mattermost
Open-source Slack alternative. Self-host option available.
Open sourceSelf-hostSecurityDevOps integrations
Free (Entry limited-use) / Custom
5
Rocket.Chat
Open-source team chat. Full control with self-hosting.
Open sourceSelf-hostFederationWhite-label
Free (Starter self-managed) / Custom