Microsoft Teams is a feature-rich enterprise collaboration platform with 320+ million users and deep Microsoft 365 integration, while Mattermost is an open-source, self-hosted alternative offering greater control and lower licensing costs for organizations prioritizing data sovereignty and customization.
Microsoft Teams vs Mattermost — Side-by-side comparison on A Versus B
Enterprise cloud-based collaboration platform with 320M users, integrated with Microsoft 365 and Office applications.
Open-source, self-hosted team collaboration platform designed for organizations requiring data control and customization.
Deployment Model. Source Code. Data Residency Control. Microsoft 365 Integration. Monthly Active Users. Base Monthly Cost Per User. Custom Branding Options
Choose Microsoft Teams if you're already invested in Microsoft 365, need enterprise-grade reliability with 99.9% SLA, and require seamless Office document collaboration and video conferencing at scale. Choose Mattermost if you prioritize data sovereignty, need full source code control, require on-premise deployment for compliance reasons, or want to minimize licensing costs while maintaining significant customization capabilities.
Microsoft Teams: 320 million | Mattermost: N/A
Microsoft Teams: Included with M365 | Mattermost: N/A
Microsoft Teams: No, paid only | Mattermost: N/A
Microsoft Teams: Full native integration | Mattermost: N/A
Microsoft Teams: Often requires app/account | Mattermost: N/A
Microsoft Teams: 10,000 | Mattermost: N/A
Microsoft Teams: 50 rooms | Mattermost: N/A
Microsoft Teams: $6/month (Microsoft 365 bundle) | Mattermost: N/A
Microsoft Teams: Limited translation features | Mattermost: N/A
Microsoft Teams: $6.00 (with Microsoft 365 Business Basic) | Mattermost: N/A
Microsoft Teams: $72 (bundled pricing) | Mattermost: N/A
Microsoft Teams: 1,000+ | Mattermost: N/A
Microsoft Teams: Up to 10,000 | Mattermost: N/A
Microsoft Teams: Native with SharePoint, OneDrive, Office Web Apps | Mattermost: N/A
Microsoft Teams: Microsoft Copilot Pro (enterprise AI, meeting insights) | Mattermost: N/A
Microsoft Teams: 2-4 seconds average | Mattermost: 0.5-1 second average
Microsoft Teams: $6 (Teams Essentials) | Mattermost: N/A
Maximum Free Tier Group Meeting Duration
Microsoft Teams: 24 hours | Mattermost: N/A
Microsoft Teams: 100 participants | Mattermost: N/A
Microsoft Teams: Premium only ($10/user/month) | Mattermost: N/A
Microsoft Teams: 8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI) | Mattermost: N/A
Advanced Chat Features (Channels, Threading, Workflows)
Microsoft Teams: Advanced (channels, nested threads, queues, connectors) | Mattermost: N/A
Microsoft Teams: 4.5 stars | Mattermost: N/A
Microsoft Teams: 3,669 reviews | Mattermost: N/A
3-Year Total Cost of Ownership (1,000 users)
Microsoft Teams: Lower (integrated M365) | Mattermost: N/A
Microsoft Teams: 3,668 reviews | Mattermost: N/A
Microsoft Teams: 7.9% positive | Mattermost: N/A
Microsoft Teams: Limited to basic captions | Mattermost: N/A
Microsoft Teams: Basic transcription only | Mattermost: N/A
Microsoft Teams: Third-party device support only | Mattermost: N/A
Microsoft Teams: $4.50 | Mattermost: N/A
Microsoft Teams: 60 minutes | Mattermost: N/A
Microsoft Teams: Limited (Copilot requires E5) | Mattermost: N/A
Microsoft Teams: 4K at 30fps | Mattermost: N/A
Microsoft Teams: 31 languages | Mattermost: N/A
Enterprise Deployment Adoption (500+ seat orgs)
Microsoft Teams: 67% of deployments | Mattermost: N/A
3-Year TCO Advantage for 1,000 Users with M365
Microsoft Teams: 47% lower cost | Mattermost: N/A
Microsoft Teams: $7.00 (Business Basic 2026 price) | Mattermost: N/A
Microsoft Teams: 300+ participants | Mattermost: N/A
Microsoft Teams: Excellent (optimized for reliability) | Mattermost: N/A
Microsoft Teams: 4K (3840x2160) | Mattermost: N/A
Microsoft Teams: 40+ languages (Teams Premium) | Mattermost: N/A
Microsoft Teams: Steep (enterprise-focused interface) | Mattermost: N/A
Microsoft Teams: 350+ million monthly active users | Mattermost: N/A
Microsoft Teams: ISO 27001, SOC 2, HIPAA, GDPR | Mattermost: N/A
Microsoft Teams: 1080p (1920x1080) | Mattermost: N/A
Microsoft Teams: 60 minutes (3+ participants) | Mattermost: N/A
Microsoft Teams: Unlimited (OneDrive) | Mattermost: N/A
Microsoft Teams: Full (Word, Excel, PowerPoint, Outlook) | Mattermost: N/A
Microsoft Teams: Copilot Pro required ($20+ per tenant) | Mattermost: N/A
Microsoft Teams: Windows, Mac, iOS, Android, Web | Mattermost: N/A
Microsoft Teams: 4.5 Mbps | Mattermost: N/A
Microsoft Teams: 320 million | Mattermost: ~0.3 million
Microsoft Teams: $0 (Free) or $6 (Standard) | Mattermost: $0 (self-hosted) or $10 (cloud)
Microsoft Teams: 500+ apps | Mattermost: 400+ plugins
Microsoft Teams: 10,000 participants | Mattermost: Up to 1,000 (with Jitsi)
Microsoft Teams: Cloud-only (SaaS) | Mattermost: Self-hosted, Cloud, Docker, Kubernetes
Microsoft Teams: Closed proprietary | Mattermost: Open-source (AGPL v3)
Microsoft Teams: Copilot with GPT-4, speech-to-text, real-time translation | Mattermost: Limited AI features, plugin-based integration possible
Microsoft Teams: Microsoft-managed regional datacenters (limited control) | Mattermost: Full control with self-hosted deployment
Microsoft Teams: 500+ | Mattermost: 500+
Microsoft Teams: 10000 | Mattermost: N/A
Microsoft Teams: unlimited | Mattermost: N/A
Microsoft Teams: SOC 2 Type II, FedRAMP, HIPAA, GDPR, HITRUST | Mattermost: N/A
Microsoft Teams: 99.9% | Mattermost: N/A
Microsoft Teams: 320 million | Mattermost: 500,000+ deployments
Microsoft Teams: 100 GB per user | Mattermost: N/A
Microsoft Teams: 90 days | Mattermost: N/A
Annual Subscription Cost (Pro, 100 users)
Microsoft Teams: $7,800 or free with Microsoft 365 | Mattermost: N/A
Microsoft Teams: 450 MB | Mattermost: N/A
Microsoft Teams: 80-120ms | Mattermost: N/A
Microsoft Teams: 60 minutes (100 participants max) | Mattermost: N/A
Microsoft Teams: $6.00 | Mattermost: N/A
Microsoft Teams: 30fps | Mattermost: N/A
Microsoft Teams: 60+ languages | Mattermost: N/A
Microsoft Teams: Limited (fixed structure) | Mattermost: N/A
Free Tier Meeting Duration for Group Calls
Microsoft Teams: 60 minutes (unlimited participants) | Mattermost: N/A
Microsoft Teams: $70/year (via Microsoft 365 Business Basic) | Mattermost: N/A
Microsoft Teams: 300 participants | Mattermost: N/A
Microsoft Teams: 5 GB (OneDrive) | Mattermost: N/A
Microsoft Teams: 50 breakout rooms | Mattermost: N/A
Global Enterprise Video Conferencing Market Share (2024)
Microsoft Teams: 28.2% | Mattermost: N/A
Microsoft Teams: Native: Word, Excel, SharePoint, OneDrive, Outlook, Power BI | Mattermost: N/A
Monthly Subscription Cost (Pro/Standard)
Microsoft Teams: $0 (bundled) or $12.50 (standalone) | Mattermost: N/A
Microsoft Teams: 200-300ms | Mattermost: N/A
Microsoft Teams: Last 3 months only | Mattermost: N/A
Microsoft Teams: 250GB | Mattermost: N/A
Microsoft Teams: Unlimited | Mattermost: N/A
Microsoft Teams: Native (deep) | Mattermost: N/A
Microsoft Teams: 4.0/5 | Mattermost: N/A
Microsoft Teams: 300+ million users | Mattermost: 500,000+ deployments
Microsoft Teams: $4.00 (Teams Essentials) - $12.50 (Teams Premium) | Mattermost: $0 (open-source) - $39/month (Mattermost Cloud)
Microsoft Teams: 2 GB per file | Mattermost: 100+ GB (configurable)
Microsoft Teams: 1,000+ native integrations | Mattermost: 120+ integrations (community-contributed)
Microsoft Teams: Proprietary closed-source | Mattermost: AGPL v3 open-source
Microsoft Teams: Cloud-only SaaS | Mattermost: Full self-hosted + cloud managed options
Annual TCO (1,000 users, 3-year average)
Microsoft Teams: $48,000-150,000 | Mattermost: $0 (self-hosted) or $39,000 (managed cloud)
Microsoft Teams: 1000 (1TB OneDrive) | Mattermost: N/A
Maximum Video Conference Participants (Free)
Microsoft Teams: 1000+ | Mattermost: N/A
Microsoft Teams: 4.1/5 (8,300 reviews) | Mattermost: N/A
Microsoft Teams: Basic keyword search (limited free tier) | Mattermost: N/A
Microsoft Teams: 300 standard | Mattermost: N/A
Microsoft Teams: $0 (limited) | Mattermost: N/A
Microsoft Teams: $6.99 | Mattermost: N/A
Microsoft Teams: 1920x1080 | Mattermost: N/A
Microsoft Teams: 1 primary | Mattermost: N/A
Microsoft Teams: Unlimited in OneDrive | Mattermost: N/A
Microsoft Teams: 8 (Copilot, live transcription, noise suppression, translation) | Mattermost: N/A
Microsoft Teams: 8 (SOC 2, FedRAMP, HIPAA, ISO 27001) | Mattermost: N/A
Microsoft Teams: 4 participants | Mattermost: N/A
Microsoft Teams: Available (free in 43 languages) | Mattermost: N/A
Microsoft Teams: Office 365/Microsoft 365 (native) | Mattermost: N/A
Microsoft Teams: 1080p @ 30fps | Mattermost: N/A
Microsoft Teams: 4K @ 30fps (Premium only) | Mattermost: N/A
Microsoft Teams: $15 (Essentials) / $20 (Standard) | Mattermost: N/A
Microsoft Teams: 36+ months | Mattermost: N/A
Microsoft Teams: 8-10 (account creation + installation) | Mattermost: N/A
Microsoft Teams: Native (OneDrive, SharePoint, Outlook, Excel co-auth) | Mattermost: N/A
Microsoft Teams: 10,000 most recent | Mattermost: N/A
Microsoft Teams: Full integration with Office apps | Mattermost: N/A
Microsoft Teams: Certified | Mattermost: N/A
Microsoft Teams: 1,500+ apps | Mattermost: N/A
Microsoft Teams: $6 per user (Teams Essentials) | Mattermost: N/A
Microsoft Teams: 50-80ms | Mattermost: N/A
Microsoft Teams: 3,000 searchable | Mattermost: N/A
Microsoft Teams: Native Outlook calendar sync | Mattermost: N/A
Microsoft Teams: Yes (SOC 2, HIPAA, FedRAMP) | Mattermost: N/A
Microsoft Teams: 100 video participants | Mattermost: N/A
Microsoft Teams: Free Teams ($5-12/month for Pro) | Mattermost: N/A
Microsoft Teams: 720p standard (1080p available) | Mattermost: N/A
Microsoft Teams: Native integration (Word, Excel, PowerPoint, OneDrive) | Mattermost: N/A
Microsoft Teams: Windows, Mac, iOS, Android | Mattermost: N/A
Microsoft Teams: 720p30fps | Mattermost: N/A
Microsoft Teams: 4.2 (2.4M reviews) | Mattermost: N/A
Microsoft Teams: $6-12 | Mattermost: $0-20 (self-hosted option free)
Microsoft Teams: 300 participants | Mattermost: Depends on third-party (Jitsi default 100)
Microsoft Teams: 99.9% | Mattermost: No SLA (self-managed)
Microsoft Teams: Not available | Mattermost: Fully supported
Microsoft Teams: 1000+ via Microsoft AppSource | Mattermost: 200+ community plugins
Microsoft Teams: 30 days (limited features) | Mattermost: Unlimited (open-source community)
Microsoft Teams: N/A | Mattermost: $10.00
Microsoft Teams: N/A | Mattermost: $18.00
Microsoft Teams: N/A | Mattermost: Self-hosted, on-premise, cloud
Microsoft Teams: N/A | Mattermost: Full control with self-hosting option
Microsoft Teams: N/A | Mattermost: Stable
Microsoft Teams: N/A | Mattermost: Yes, fully open-source
Microsoft Teams: N/A | Mattermost: Basic automation and workflows
Microsoft Teams: N/A | Mattermost: 50,000+
Microsoft Teams: N/A | Mattermost: Unlimited
Microsoft Teams: N/A | Mattermost: Yes (AGPL license)
Microsoft Teams: N/A | Mattermost: Varies by provider (24-48h)
Microsoft Teams: N/A | Mattermost: 10GB (self-hosted unlimited)
How to choose between Microsoft Teams and Mattermost
Microsoft Teams vs Mattermost — Structured Comparison Data
Machine-readable comparison dataset for Microsoft Teams vs Mattermost. Contains 181 attribute comparisons, 5 FAQ pairs.
Microsoft Teams vs Mattermost — Attribute Category Vocabulary
Taxonomy of attribute categories used to classify comparison data for Microsoft Teams vs Mattermost.
Can I host Mattermost on my own servers?
Yes, Mattermost is designed for on-premise deployment. You can download the open-source version and run it on your own infrastructure, giving you complete control over data residency, security, and customization. Mattermost also offers managed cloud hosting if you prefer not to manage infrastructure yourself.
Does Mattermost work with Microsoft Office documents like Teams does?
Mattermost can integrate with Office 365 via third-party integrations and webhooks, but it doesn't have the deep native integration that Teams provides. You can share Office files and link to SharePoint, but collaborative editing within Mattermost is limited. For heavy Office 365 users, Teams remains superior.
How much does it cost to run Mattermost for 1,000 employees?
Mattermost's professional tier costs approximately $10-20 per user per month, totaling $10,000-20,000 annually for 1,000 users. However, the open-source community edition is free—you only pay for server hosting, infrastructure, and internal IT support. With Teams, expect $6,000-12,000 annually for the same user count.
Both are secure for different reasons. Teams offers Microsoft's massive security infrastructure, advanced threat protection, and compliance certifications (SOC 2, HIPAA, GDPR). Mattermost's open-source code allows organizations to audit security themselves and deploy on isolated networks. Neither is objectively 'more secure'—it depends on your threat model and compliance needs.
Can I export my data from Teams or Mattermost if I want to switch?
Teams allows data export through Microsoft's Data Subject Right tools, but the process is complex and time-consuming. Mattermost's open-source nature makes data portability straightforward—your data is in standard formats and can be exported easily. If vendor lock-in is a concern, Mattermost is significantly more flexible.
How to Choose Between Microsoft Teams and Mattermost
Deployment Model: Microsoft Teams has Cloud-only (Microsoft-hosted), while Mattermost has Self-hosted or cloud options.
Source Code: Microsoft Teams has Closed proprietary, while Mattermost has Open-source (AGPL/Commercial).
Data Residency Control: Microsoft Teams has Limited to Microsoft data centers, while Mattermost has Full control with on-premise hosting.
Microsoft 365 Integration: Microsoft Teams has Native integration with Office, SharePoint, Outlook, while Mattermost has Limited third-party integrations.
Monthly Active Users: Microsoft Teams has 320 million (as of 2024), while Mattermost has 500,000+ deployments globally.
Base Monthly Cost Per User: Microsoft Teams has $6-12 USD, while Mattermost has $0 (open-source) or $10-20 (professional).
Custom Branding Options: Microsoft Teams has Limited to logo and theme colors, while Mattermost has Full white-label customization.