Comparison
Discourse Meta vs Slack Discourse Meta and Slack both land on Depends.
meta.discourse.org
You pasted Discourse's own community forum, not a product page . the product behind it is Discourse, open-source forum software, and evidence is thin because most returned sources cover Facebook's parent Meta instead.
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slack.com
Confidence is low: only Slack's own marketing/security page was available for review.
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Discourse Meta versus Slack Compare Discourse Meta Slack Verdict Depends Depends Best for Open-source communities wanting permanent, searchable discussion Distributed teams coordinating in channels Who it's not for Small teams needing quick chat . use Discord or Slack Solo founders or 1-3 person teams . platform weight is overkill Privacy No known public vulnerabilities found in the sources reviewed. No known public vulnerabilities found in the sources reviewed. Support quality Official public community forum serves as primary support No support evidence in sources reviewed Public sentiment Sources contain no user reviews of Discourse; review results returned cover Meta Platforms (Facebook) and unrelated products instead. No independent user reviews were found in the sources reviewed. Biggest gotcha Self-hosting means you own patching; Discourse ships CVEs via its public RSS feed Guess: Enterprise Key Management is likely a paid add-on . confirm before budgeting.
Pick Discourse Meta whenOpen-source communities wanting permanent, searchable discussion Self-hosters comfortable with upgrades and patching Companies replacing mailing lists with real forums When Discourse Meta is not a fitSmall teams needing quick chat . use Discord or Slack Anyone who confused this with Facebook's Meta . different company entirely Non-technical teams that won't patch a self-hosted forum Pick Slack whenDistributed teams coordinating in channels Sales teams wanting Salesforce in chat Orgs needing admin and security controls Teams automating routine workflows When Slack is not a fitSolo founders or 1-3 person teams . platform weight is overkill Buyers who need clear self-serve pricing upfront Orgs already standardized on Microsoft Teams Anyone who just needs basic group chat, not a platform Sources official official security review security Read the full reports
Read the full Discourse Meta report
Read the full Slack report