Slack logo

Slack(CRM)

Leader#2 in Productivity & Collaboration

Salesforce (NYSE: CRM) team messaging platform at $27.7B acquisition processing 1.5B weekly messages; competing with Microsoft Teams for enterprise collaboration through Salesforce integration and developer-first experience.

Best for: Team CommunicationMarket leader
93
AI Score
Grade A
AI Visibility Score (Beta)
Productivity & CollaborationTeam CommunicationCRMWebsiteUpdated September 2026

Company Overview

About Slack

Slack is a San Francisco-based team collaboration and communication platform — acquired by Salesforce (NYSE: CRM) in 2021 for $27.7 billion — providing organizations with channel-based messaging, direct messaging, file sharing, video calls (Slack Huddles), and a 2,600+ app integration ecosystem that connects team communication with the business tools (Salesforce, Jira, GitHub, Google Drive) teams use daily. Used by 200,000+ organizations including IBM, Airbnb, and Target, Slack processes 1.5 billion+ messages weekly and serves as the communication backbone for technology companies, knowledge work organizations, and enterprises worldwide.

Business Model & Competitive Advantage

Slack's channel-based organization model (persistent, searchable message history organized by topic, project, or team rather than email threads) creates institutional knowledge infrastructure: a new team member can search a project channel's history to understand decisions, context, and relevant files without requiring a handoff document. The Slack Connect feature enables secure external collaboration with clients, partners, and vendors in shared channels — replacing email threads for ongoing external business relationships. Salesforce's ownership has integrated Slack as the work operating system for Salesforce's 150,000+ customers — Slack channels can display Salesforce CRM records, trigger Salesforce workflows, and receive Salesforce Einstein AI notifications directly.

Competitive Landscape 2025–2026

In 2025, Slack (NYSE: CRM) competes in the team communication and collaboration market with Microsoft Teams (NASDAQ: MSFT, the dominant enterprise collaboration platform with 320M+ users), Google Chat (GOOGL, integrated into Workspace), and Zoom Team Chat (ZM, expanding into asynchronous communication) for enterprise collaboration platform share. Microsoft Teams' inclusion in Microsoft 365 at no incremental cost has driven mass adoption at enterprises already on Microsoft, making Teams the default for Microsoft shops. Slack's differentiation focuses on developer integrations and workflow automation (Workflow Builder), Slack AI (summary and answer features that process conversation context), and the premium user experience that developer-heavy and startup organizations prefer. The 2025 strategy focuses on Salesforce AI integration (Agentforce alerts and actions in Slack), growing Enterprise Grid for large organization management, and building the Slack platform for third-party application development.

Founded
2013
Headquarters
San Francisco, California
Curated content • Fact-checked and verified

The Slack Story

Founded in 2013
San Francisco, California
Founded by Stewart Butterfield, Eric Costello and 2 others

The Breakthrough Moment

Slack originated as internal communication tool at Tiny Speck when Glitch online game shut down in 2012. Team pivoted to develop communication platform. Public launch in August 2013 generated 8,000+ signups in first 24 hours.

Original Mission

"Make work life simpler, more pleasant, and more productive by bringing all communication together in one place with real-time messaging, archiving and search for modern teams."

Founders

Stewart ButterfieldEric CostelloCal HendersonSerguei Mourachov

Recent Activity

View all →
blog_post
Slack vs. Chatwork: Which Platform Is Better for Your Team?

Compare Slack vs. Chatwork across collaboration, AI, integrations, workflow automation, and security to find the right platform for your team.

blog_post
Slack vs. LINE WORKS: Which Platform Is Better for Your Team?

Compare Slack vs. LINE WORKS across collaboration, AI, integrations, security, and productivity to find the best platform for your organization.

blog_post
Slack Feature Drop: Where Agents are Heating Up
blog_post
Slack vs. Stackfield: Which Platform Is Better for Your Team?

Compare Slack and Stackfield across collaboration, AI, security, integrations, and project management to find the best platform for your team.

blog_post
Slack vs. ClickUp: Which Platform Is Better for Your Team?

Compare Slack vs. ClickUp for team collaboration, project management, AI, integrations, and workflows. Learn which platform fits your team’s needs.

blog_post
Slackbot: Your Agentic AI Workspace for Deep Work

Slackbot now scales your best workflows, develops cited research, bundles skills as one unit, within a full-screen AI workspace in Slack.

blog_post
Slack Code: Where Your Team and Agents Build Together

Introducing Slack Code: Where Building is a Team Sport

blog_post
Anyone can now build Agents on Slack: Introducing Add to Slack
blog_post
AI Meeting Assistant Tools to Save Time and Boost Productivity

Discover the best AI meeting assistant tools to automate notes, surface insights, and boost team productivity.

blog_post
10 Proven Strategies to Boost Employee Morale and Engagement

Boost employee morale today with 10 proven strategies for recognition, work-life balance, leadership, and wellness.

blog_post
What Is Agile Methodology? A Guide to Principles and Practices

Agile methodology breaks work into short cycles for faster delivery. See how Slack keeps agile teams aligned.

10-Q
10-Q — 10-Q

Quarterly Report filed 2026-08-13

Company Timeline

Major milestones in Slack's journey

5
Total Events
1
Acquisitions
1
Product Launches

Leadership Team

Meet the leaders behind Slack

Denise Dresser

Chief Executive Officer

Salesforce executive with 12+ years tenure. Appointed Slack CEO in late 2023.

Sarah Walker

Chief Operating Officer

Nearly five years with Slack.

Peter Doolan

Chief Customer Officer

10-year Salesforce veteran; formerly EVP of digital transformation and innovation.

Key Differentiators

Market Leader

Slack is recognized as a market leader in the Productivity & Collaboration sector, demonstrating strong industry presence and customer trust.

Top 3 Ranked

Ranked #2 in the Productivity & Collaboration category, consistently recognized for excellence.

Frequently Asked Questions

Estimated Visibility Trend (Beta)

Simulated 8-week rolling score

93
→ Stable

Based on estimated brand signals. Historical tracking coming soon.

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