Mattermost vs. Slack for Enterprise

Mattermost offers an open source, self-hosted alternative to Slack’s SaaS-only workplace messaging service

Modern messaging for privacy-conscious orgs

While both Mattermost and Slack offer agility and efficiency through modern collaboration, Mattermost’s self-hosted approach provides unmatched control, privacy, and legal compliance. Mattermost helps teams deliver high quality software while meeting the safety, privacy, and scale requirements of IT and security teams.

  • Self-hosted deployment on-premise or to private or public clouds

  • Retain total control over data

  • No third-party monitoring

  • Full access to source code, server APIs, and libraries

Open source and self-hosted

Mattermost’s on-premise and private cloud deployments provide the benefits of modern communication without sacrificing privacy. And using open source software allows development teams to build high-performance workflows for DevOps, ChatOps, conversational development, and continuous deployment while maintaining complete code auditability and control.

Join the world’s best companies on Mattermost

Mattermost offers the control, privacy, legal compliance, and extensibility top enterprises need

Security

Security

Mattermost offers modern communication behind your firewall. Run your vital communications under your existing security and IT policies. Deploy to public, private or hybrid clouds with full access to source code and total control of your single-tenant system.

Privacy

Privacy

Your IP address, your usage patterns, the contents of your messages—SaaS services know more about your company than you do. In contrast, Mattermost provides the benefits of modern communication without sacrificing privacy.

Legal Compliance

Legal Compliance

Consumer data protection laws, data regulations, GDPR and even non-disclosure agreements are complex and ever-changing, with heavy penalties for breach. Self-hosting your communications simplifies compliance and reduces risk.

Extensibility

Extensibility

Mattermost offers enterprise-grade customization with complete access to source code, UI text files, APIs, drivers, and a wide array of open source integrations and samples. Whether it’s branding the login page or white-labeling mobile apps, the enterprise is in total control.

Scalability

Scalability

Mattermost was built ground-up for enterprise with a single-tenant private cloud architecture offering high availability and horizontal scaling. Tens of thousands of users can operate out of a single team and hundreds of teams can be deployed in an enterprise.

Open Source

Open Source

An open core platform means your team retains control over the service’s technical roadmap and your team is free to develop additional features without restriction. Supported by a vibrant open source community, Mattermost supports 600 integrations and counting.

Mattermost vs. Slack Enterprise Grid

For privacy-conscious enterprises, Mattermost is the team collaboration solution that increases efficiency and accelerates workflow while meeting custom security and sovereignty needs.

Capability Slack
Enterprise Grid
Mattermost Enterprise
Edition E20
Productivity Security Sovereignty

Persistent messaging, file sharing, and search across web, mobile and PC:

Persistent one-to-one and group messaging, threaded discussions, file sharing, multi-team support, private/public channel-based organization and unlimited search. Also support for advanced expression via rich text formatting plus emojis, custom emojis, emoji reactions, link previews and file previews. User-friendly native apps for Windows, Mac, Linux, iOS and Android.

Core integrations:

Webhooks, custom commands, action buttons, Zapier support, plug-ins and OAuth 2.0 apps that integrate with existing systems.

Multi-language support:

A​bility to change user interface language from U.S. English to other languages.

Five (5) languages Sixteen (16) languages

White labelling:

Ability to replace vendor branding, customize user interface colors, fonts and on-screen text to match a customer’s internal brand guidelines.

Unlimited UI and UX customization:

A​bility to create user interface plugins to extend and customize functionality, and even re-write code in open source mobile, PC and web applications to meet specific security compliance or user experience needs.

Productivity Security Sovereignty

Core access controls:

SAML and MFA-based login and granular permissions. Deployment of mobile applications under Enterprise Mobility Management (EMM) solutions including AirWatch, Blackberry Dynamics, and MobileIron via AppConfig.

Advanced access controls:

Active Directory/LDAP login and certificate-based authentication within high-security networks.

Native eDiscovery compliance support:

Built-in eDiscovery through daily compliance exports with Actiance XML, Global Relay EML, and CSV formats.

Data loss prevention (DLP):

Ability to develop controls to block posting of sensitive data to channels via plugins.

Complete operational auditability:​

Full access to logs of all server records, infrastructure changes, database changes, network information, configuration changes, user activity, logins and IP addresses. Ability to run system within an organization’s intrusion detection and enhanced audit infrastructure.

Complete technical auditability:

Complete access to all server APIs, source code and libraries enabling manual and automated security audits of all components used.

Private cloud deployment to Azure:​

Deployed on private cloud on Azure including U.S. Federal infrastructure with FedRAMP and DoD Cloud.

Private cloud deployment to AWS:​

Deployed on private cloud on AWS including U.S. Federal infrastructure with FedRAMP, C2S Cloud and AWS Secret Region.

General on-premise and private/public cloud deployment:

Deployed on infrastructure in physical data centers as well as on Google Cloud, Oracle Cloud, CenturyLink and other cloud services.

Enterprise app store support:

Ability to self-compile mobile apps and push notification proxy with organization-controlled certificates and deploy mobile applications to Enterprise App Store to meet high-security requirements.

Productivity Security Sovereignty

Private network deployment:

Deploys on private network, behind your organization’s firewall, giving you full control over your own data and enabling you to comply with your internal IT policies.

No third-party monitoring:

Ability to run collaboration system without any third party having knowledge of operations, user locations, IP addresses or unique identifiers.

Verifiable disaster recovery and data retention policies:

Complete, verifiable access to disaster recovery and data retention solutions, including the ability to confirm backup solutions do not circumvent data retention policies.

Transparent system updates:

F​ull transparency to code changes, releases notes, feature request tracking and issue tracking.

The following table summarizes a comparison of Mattermost Enterprise Edition features to known Slack Enterprise Grid features as of August 9, 2018.

Persistent messaging, file sharing, and search across web, mobile and PC:

Persistent one-to-one and group messaging, threaded discussions, file sharing, multi-team support, private/public channel-based organization and unlimited search. Also support for advanced expression via rich text formatting plus emojis, custom emojis, emoji reactions, link previews and file previews. User-friendly native apps for Windows, Mac, Linux, iOS and Android.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Core integrations:

Webhooks, custom commands, action buttons, Zapier support, plug-ins and OAuth 2.0 apps that integrate with existing systems.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Multi-language support:

A​bility to change user interface language from U.S. English to other languages.

Mattermost Enterprise Edition E20 Sixteen (16) languages
Slack Enterprise Grid Five (5) languages

White labelling:

Ability to replace vendor branding, customize user interface colors, fonts and on-screen text to match a customer’s internal brand guidelines.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Unlimited UI and UX customization:

A​bility to create user interface plugins to extend and customize functionality, and even re-write code in open source mobile, PC and web applications to meet specific security compliance or user experience needs.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Core access controls:

SAML and MFA-based login and granular permissions. Deployment of mobile applications under Enterprise Mobility Management (EMM) solutions including AirWatch, Blackberry Dynamics, and MobileIron via AppConfig.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Advanced access controls:

Active Directory/LDAP login and certificate-based authentication within high-security networks.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Native eDiscovery compliance support:

Built-in eDiscovery through daily compliance exports with Actiance XML, Global Relay EML, and CSV formats.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Data loss prevention (DLP):

Ability to develop controls to block posting of sensitive data to channels via plugins.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Complete operational auditability:​

Full access to logs of all server records, infrastructure changes, database changes, network information, configuration changes, user activity, logins and IP addresses. Ability to run system within an organization’s intrusion detection and enhanced audit infrastructure.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Complete technical auditability:

Complete access to all server APIs, source code and libraries enabling manual and automated security audits of all components used.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Private cloud deployment to Azure:​

Deployed on private cloud on Azure including U.S. Federal infrastructure with FedRAMP and DoD Cloud.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Private cloud deployment to AWS:​

Deployed on private cloud on AWS including U.S. Federal infrastructure with FedRAMP, C2S Cloud and AWS Secret Region.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

General on-premise and private/public cloud deployment:

Deployed on infrastructure in physical data centers as well as on Google Cloud, Oracle Cloud, CenturyLink and other cloud services.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Enterprise app store support:

Ability to self-compile mobile apps and push notification proxy with organization-controlled certificates and deploy mobile applications to Enterprise App Store to meet high-security requirements.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Private network deployment:

Deploys on private network, behind your organization’s firewall, giving you full control over your own data and enabling you to comply with your internal IT policies.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

No third-party monitoring:

Ability to run collaboration system without any third party having knowledge of operations, user locations, IP addresses or unique identifiers.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Verifiable disaster recovery and data retention policies:

Complete, verifiable access to disaster recovery and data retention solutions, including the ability to confirm backup solutions do not circumvent data retention policies.

Mattermost Enterprise Edition E20
Slack Enterprise Grid

Transparent system updates:

F​ull transparency to code changes, releases notes, feature request tracking and issue tracking.

Mattermost Enterprise Edition E20
Slack Enterprise Grid