S

Slack

Workplace messaging and collaboration platform

Overview

Slack is a workplace messaging and collaboration platform that helps teams communicate, share files, and coordinate work in shared channels and direct messages. It includes huddles and calls, a searchable conversation history, Workflow Builder for no-code automation, and an app directory with many integrations. Since being acquired by Salesforce in 2021, it operates as the collaboration layer within Salesforce, linking conversations with other business tools. Its goal is to make organizational communication clearer and more actionable by bringing conversations, tools, and context into one place.

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About Slack

Simplify's Rating
Why Slack is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Enterprise Software

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

San Francisco, California

Founded

2009

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Simplify's Take

What believers are saying

  • Dreamforce 2026 launched Slackbot in Channels and Lightning, expanding daily usage across Salesforce.
  • Adobe, Darwinbox, and ezCater integrations show Slack remains the operating layer for enterprise workflows.
  • Slack Code went live August 25, 2026, opening higher-value engineering and AI collaboration seats.

What critics are saying

  • Microsoft Teams still dwarfs Slack on adoption, squeezing Slack to Salesforce-centric accounts by 2027.
  • Salesforce cut 133 jobs in August 2026, signaling continued overhead pressure around Slack.
  • If Salesforce prioritizes Agentforce and CRM surfaces, Slack becomes a feature, not a company.

What makes Slack unique

  • September 22, 2026: Slack became Salesforce’s front door for the agentic enterprise.
  • Slack Code brings Anthropic, Cognition, GitHub, OpenAI, and Vercel into shared channels.
  • Slack Marketplace and Slack Connect keep 500-plus apps and external work inside one interface.

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Funding

Total Funding

$1.5B

Above

Industry Average

Funded Over

11 Rounds

Acquisition funding comparison data is currently unavailable. We're working to provide this information soon!
Acquisition Funding Comparison Coming Soon

Benefits

  • Time off to rest, recharge and volunteer
  • Exceptional health-care coverage
  • Holistic programs for well-being, family planning and more

Stock Price

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

2%

2 year growth

1%
Business Wire
Oct 18th, 2026
Glean Debuts with Launch of an Intuitive Work Assistant That Puts Knowledge Of A Company In the Hands Of Its Workers

Glean today emerged from stealth with the debut of an intuitive work assistant to address the ubiquitous problem for knowledge workers: finding the right inf...

TechCrunch
Sep 2nd, 2026
Adobe brings Firefly, Photoshop, and 70+ tools to Slack via Slackbot integration

Adobe announced that customers can now use its applications through Slack's AI chatbot, Slackbot. Users can access apps including Firefly, Adobe Express, Photoshop, Premiere, Acrobat, InDesign, Illustrator, Stock, and Lightroom directly within Slack. More than 70 Adobe tools will also become available through the Adobe for Slack MCP app. The integration allows users to describe their desired tasks, and Slackbot calls the appropriate Adobe tool whilst considering conversation context. Users can convert information from conversations or Canvas into PDFs, images, and videos, or bring in assets from previous campaigns for editing. The integration launches for Slack Business+ and Enterprise+ teams. Adobe previously introduced similar functionality for ChatGPT last month and plans a Gemini integration soon. Competitors Canva and Figma are also making their capabilities available in chatbots.

Associated Press
Aug 26th, 2026
Darwinbox Cortex brings AI-native HCM to Slack for seamless workforce management

Darwinbox has launched its AI-native human capital management platform, Darwinbox Cortex, on the Slack Marketplace. The integration allows employees to access workforce data, submit requests, and complete approvals directly within Slack without switching applications. The platform handles leave requests, payroll queries, expenses, and policy questions through natural language processing. Managers can approve time off, expenses, and job offers within Slack channels, whilst new hires can complete onboarding tasks through conversational interactions. Founded in 2015, Darwinbox serves over 1,400 organisations and 4.5 million employees globally. The company has been recognised as a Challenger in Gartner's Magic Quadrant for HCM platforms and holds Leader status for AI capabilities in talent acquisition. Darwinbox is backed by investors including KKR, Partners Group, Microsoft, and Salesforce Ventures.

The Register
Aug 20th, 2026
Slack Code brings AI coding agents into team channels with live preview features

Slack has launched Slack Code, a feature that brings AI coding agents into shared project channels where teams can monitor their work in real time. The Salesforce-owned platform allows users to tag an agent from a conversation, creating a dedicated code channel where colleagues can review proposed changes, view previews, and redirect the agent as needed. The feature aims to make AI-assisted coding more collaborative by moving the process from developers' terminals into Slack's group environment. Product managers, designers, and non-engineering staff can participate without specialist tools. Anthropic, Cognition, GitHub, OpenAI, and Vercel are developing integrations for the platform. Claude, Devin, Copilot, and ChatGPT are among the agents that will work within Slack Code channels. Slack maintains that humans retain control, with team members able to pause or redirect agents and approve high-stakes actions like production deployments. The company says the feature is available now, though details about plan access and launch scope remain unclear.

Business Wire
Feb 3rd, 2026
ezCater integrates with Slack to streamline workplace meal ordering and boost productivity

ezCater, the leading US workplace food tech platform, has launched a Slack integration to streamline employee meal programmes. The integration embeds ezCater's Relish service directly into Slack, enabling workers to view menus, order meals and receive delivery updates without switching applications. The integration features automated reminders, one-click reordering, real-time delivery notifications and in-app meal ratings. According to ezCater's 2025 Lunch Report, workers skip lunch at least once weekly, though 88% acknowledge hunger impairs performance. AppFolio reported a 14% increase in lunch participation after implementing the integration. ezCater brings individually packaged meals from local restaurants to workplaces, with organisations setting subsidies and schedules whilst employees select their own meals. The integration is available today.

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