B2B SaaS Provider · vs · B2B SaaS Provider

Mattermost vs Slack

Structured technology and market comparison · 2026

Direct Feature Comparison

Mattermost · vs · Slack
Primary Market / Role
MattermostB2B SaaS Provider
SlackB2B SaaS Provider
Platform Focus
Mattermost

Secure enterprise collaboration and workflow software for regulated teams.

Slack

Enterprise team messaging and workflow collaboration SaaS platform.

Company Size
Mattermost1,001–5,000 employees
Slack1,001–5,000 employees
Headquarters
MattermostUnknown
SlackUS
Year Founded
MattermostUnknown
Slack2009

Comparison Analysis

What is the main difference between Mattermost and Slack?

When comparing Mattermost and Slack, both platforms operate within the Productivity & Collaboration SaaS and B2B SaaS Provider ecosystem. Mattermost is positioned as Secure enterprise collaboration and workflow software for regulated teams, whereas Slack focuses on Enterprise team messaging and workflow collaboration SaaS platform. Decision-makers evaluate both solutions when orchestrating their commercial monetization and technology stack.

What are the top alternatives to Mattermost and Slack?

When evaluating Mattermost and Slack, enterprise buyers also consider other platforms in Productivity & Collaboration SaaS and B2B SaaS Provider. You can discover the full competitive landscape and evaluate other alternatives by viewing their respective footprint profiles on Polaris7.

Market Signals

Recent Market Signals & Activity: Mattermost vs Slack

Documented market movements, strategic partnerships, product releases, and regulatory developments mapped across Polaris7.

Mattermost

Recent Signals

No recent market signals documented for Mattermost in the current tracking window.

Slack

Recent Signals

  • ·onlinemarketing.deAI

    ChatGPT Voice Now Controls Apps and Work Tasks via Speech

    OpenAI has rolled out voice capabilities for ChatGPT Voice, allowing users to interact with connected apps like Gmail, Google Calendar, and Slack through natural language. The feature, now globally available, can perform actions such as checking emails, scheduling appointments, and creating documents, presentations, and spreadsheets via ChatGPT Work. The update introduces access to advanced models like GPT-6 Astra, Sol, and Luna for complex tasks. Users can speak instructions directly, with on-screen confirmation required for sensitive actions. ChatGPT Work voice control is available on web and mobile for paid subscribers, enabling task completion and browser actions. This marks a significant step toward more conversational and autonomous AI assistants in the workplace.

    • ChatGPT Voice now accesses connected apps like Gmail, Google Calendar, and Slack.
    • The feature is available globally for users.
    • ChatGPT Work can be controlled by voice to create documents, presentations, and spreadsheets.
  • ·CNBC TechnologyPlatform

    Salesforce Raises Fiscal 2030 Revenue Target to $63B

    At its Dreamforce conference, Salesforce issued a revenue forecast for fiscal 2030 exceeding $63 billion, surpassing analysts' expectations of $59.2 billion. CEO Marc Benioff highlighted a pivotal moment for enterprise AI, amid a rebound from the 'SaaSpocalypse' narrative. The company reported a $2.6 billion gain on strategic investments in Anthropic, which boosted profits, and launched 'Claudeforce' for integrating Salesforce data with Anthropic's Claude. Up to 1,000 clients have beta access. Salesforce also promoted its new AI reasoning model 'Koa' based on Nvidia technology, and reported that Slack has become a hub for AI agent communication. The company has bought back $60 billion in shares and hinted at monetizing its Anthropic stake.

    • Salesforce projects fiscal 2030 revenue over $63 billion.
    • Analysts polled by LSEG expected $59.2 billion.
    • Salesforce realized a $2.6 billion gain on Anthropic investment.
  • ·onlinemarketing.deAI

    ChatGPT Work Learns Your Writing Style from Gmail, Slack

    OpenAI has introduced a new personalization feature for its ChatGPT Work agent, allowing it to learn and mimic a user's writing style. By connecting to services like Gmail, Google Drive, Slack, and SharePoint, the AI can analyze emails, documents, and chat messages to adopt typical greetings, favored phrases, punctuation, and tone. This enables ChatGPT Work to produce text that closely resembles the user's own writing. The feature is available in the web version for paying ChatGPT Work users, with mobile support expected. This development highlights the growing trend of personalized AI in professional workflows, potentially impacting marketing and communication tasks.

    • OpenAI's ChatGPT Work can now learn a user's writing style from Gmail, Google Drive, Slack, and SharePoint.
    • The personalization feature is accessible via the ChatGPT Work interface or settings under 'Personalisierung' and 'Schreibstil'.
    • The feature is available in the web version for paying users with ChatGPT Work access.

Compare their exact ecosystem overlaps.

Explore all deep relationships in Polaris7. Discover exactly which mutual clients, integrated technologies, and overlapping partners Mattermost and Slack share across the market ecosystem.