{"slug":"microsoft-teams-vs-mattermost","question":"Microsoft Teams vs Mattermost","answer":"Microsoft Teams is a cloud-based enterprise collaboration platform with 320+ million monthly active users integrated into Microsoft 365, while Mattermost is a self-hosted open-source alternative offering greater control and privacy. Teams dominates the market with broader integrations; Mattermost appeals to organizations requiring data sovereignty and deployment flexibility.","answer_curated":true,"verdict":"Choose Microsoft Teams if you're already invested in Microsoft 365, need enterprise-grade reliability with minimal setup, and prioritize feature breadth and integration depth. Choose Mattermost if you require self-hosted deployment, open-source transparency, data sovereignty control, or operate in regulated industries with strict data residency requirements.","keyDifferences":[{"label":"Deployment Model","winner":"b","entityAValue":"Cloud-only (SaaS)","entityBValue":"Self-hosted or cloud"},{"label":"Monthly Active Users","winner":"a","entityAValue":"320 million (2024)","entityBValue":"300,000+ estimated"},{"label":"Source Code","winner":"b","entityAValue":"Proprietary","entityBValue":"Open-source (Apache 2.0)"},{"label":"Base Price (per user/month)","winner":"b","entityAValue":"$6 (Teams Free) - $12.50 (Standard)","entityBValue":"Free (self-hosted) - $10 (cloud)"},{"label":"Microsoft 365 Integration","winner":"a","entityAValue":"Native seamless integration","entityBValue":"Limited third-party integration"}],"winner":{"slug":"mattermost","name":"Mattermost"},"confidence":"high","entities":[{"name":"Microsoft Teams","slug":"microsoft-teams","url":"https://www.aversusb.net/entity/microsoft-teams","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/microsoft-teams"},{"name":"Mattermost","slug":"mattermost","url":"https://www.aversusb.net/entity/mattermost","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/mattermost"}],"faqs":[{"question":"Can Mattermost replace Microsoft Teams?","answer":"Mattermost can replace Teams for core messaging and collaboration needs, but Teams' advantages are significant: seamless Microsoft 365 integration (Outlook, SharePoint, OneDrive), larger participant video calls (10,000 vs 1,000), and built-in AI features via Copilot. Mattermost excels if you prioritize data sovereignty, open-source transparency, and cost control. For organizations heavily invested in Microsoft products, migration may not be cost-effective."},{"question":"Is Mattermost truly free to use?","answer":"Yes, Mattermost's self-hosted version is permanently free with no user limits under the Apache 2.0 license. However, free doesn't mean cost-free: you need in-house IT resources for server setup, SSL certificates, security updates, and maintenance. Organizations typically estimate $2,000-$10,000 annually in infrastructure and labor costs. Mattermost Cloud (managed hosting) starts at $10 per user/month."},{"question":"Which is more secure: Teams or Mattermost?","answer":"Both are secure, but differently. Teams offers enterprise-grade security (SOC 2 Type II, HIPAA, ISO 27018) with Microsoft's resources defending against threats. Mattermost's self-hosted model provides security through transparency: you audit the open-source code, control data location, and don't rely on third-party cloud infrastructure. For GDPR compliance and data residency requirements, Mattermost self-hosted offers superior control. For vulnerability management and zero-day protection, Teams' enterprise resources win."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/microsoft-teams-vs-mattermost), Microsoft Teams is a cloud-based enterprise collaboration platform with 320+ million monthly active users integrated into Microsoft 365, while Mattermost is a self-hosted open-source alternative offer","dateModified":"2026-06-23T08:11:51.820Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/microsoft-teams-vs-mattermost","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/microsoft-teams-vs-mattermost","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/microsoft-teams-vs-mattermost","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost#claimreview","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Microsoft Teams vs Mattermost","reviewBody":"Microsoft Teams is a cloud-based enterprise collaboration platform with 320+ million monthly active users integrated into Microsoft 365, while Mattermost is a self-hosted open-source alternative offering greater control and privacy. Teams dominates the market with broader integrations; Mattermost appeals to organizations requiring data sovereignty and deployment flexibility.","datePublished":"2026-06-23T08:11:51.777Z","dateModified":"2026-06-23T08:11:51.820Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost","name":"Microsoft Teams vs Mattermost","inLanguage":"en-US"}}}