Slack
Slack by Salesforce is an AI-powered work platform for team messaging, channels, search, workflow automation, enterprise knowledge, apps, integrations, and customer collaboration.
About
Slack is Salesforce's AI-powered platform for work, bringing conversations, applications, organizational knowledge, workflows, and customers into one collaboration environment. The product emerged in 2013 from the team behind Tiny Speck and was created by Stewart Butterfield, Cal Henderson, Eric Costello, and Serguei Mourachov. Salesforce completed its acquisition of Slack in July 2021. Slack reports more than 200,000 paid customers and daily active users in more than 150 countries. Salesforce employee counts, public listing, acquisition value, and Slack's former independent funding are not presented as current Slack company facts.
Products
Slack channels and messaging; huddles and clips; canvases and lists; enterprise search; Slack AI and Slackbot; workflow automation; agents and Agentforce integration; external collaboration through Slack Connect; apps and 2,500+ integrations; APIs and developer platform; enterprise administration, security, compliance, analytics, and mobile access.
Leadership
founders · executives- Cal HendersonFounder
- Eric CostelloFounder
- Serguei MourachovFounder
- Stewart ButterfieldFounder
Acquisitions
4 deals tracked- Nov 19, 2025
- Jan 28, 2025
- May 31, 2023
- Dec 8, 2022
Recent moves
funding · M&A · launches- Sep 15, 2026
- Jul 17, 2026
- Oct 15, 2025
- Sep 22, 2025
- Aug 27, 2025
- Aug 21, 2025
Slack in the news
All news →Workday said Sana, its agentic experience and orchestration engine, will work inside Claude, Google Cloud's Gemini Enterprise, Microsoft Copilot and Teams, and Slack, so employees can ask for HR and finance work in plain language while Workday applies each company's permissions, policies and approvals. Self-service in Gemini Enterprise, Copilot, Teams and Slack is available now, with Sana there in late 2026; Sana in Claude Cowork is in early access. (Source: Workday)
Apr 4, 2025“The Spy in the Slack Channel”: Inside the Silicon Valley Espionage Scandal Between Rippling and DeelIn a plot that feels more like the screenplay of a corporate thriller than a courtroom reality, two of Silicon Valley’s most celebrated HR tech unicorns—Rippling and Deel—are now locked in a high-stakes legal war…
Sep 15, 2026India’s Darwinbox Secures Follow-on Investment from TVG; Amount and Round UndisclosedServing 4.5 Million Employees, India’s Darwinbox Wins Renewed TVG Backing for AI-native HCM
Sep 1, 2026Salesforce leads $166 million investment in HiBob, valuing Israeli HR tech company at $3.2 billion - calcalistech.comSalesforce has led a $166 million funding round in HiBob, an Israeli-founded modern HRIS platform, pushing the company's valuation to $3.2 billion. The investment represents one of the largest recent bets on next-generation core HR infrastructure and underscores growing enterprise software interest in the HR technology sector.
Jul 17, 2026Workable Launches Employee Surveys, Bringing Engagement Feedback Directly into Its HRISWorkable has launched Employee Surveys inside its Performance & Engagement suite. HR teams can run engagement, pulse and onboarding surveys, automate milestone-based check-ins, collect responses via email, Workable and…
Nov 19, 2025Workday Signs Definitive Agreement to Acquire PipedreamWorkday has signed a definitive agreement to acquire Pipedream, an integration platform supporting 3,000+ connectors to business applications, to enhance its enterprise AI capabilities across HR and finance data. The…
Slack — frequently asked questions
What does Slack do?
Slack by Salesforce is an AI-powered work platform for team messaging, channels, search, workflow automation, enterprise knowledge, apps, integrations, and customer collaboration.
Where is Slack based?
Slack is based in United States.
When was Slack founded?
Slack was founded in 2013.
Who founded Slack?
Slack was founded by Stewart Butterfield; Cal Henderson; Eric Costello; Serguei Mourachov.
What kind of HR technology is Slack?
Slack is categorized under Communication & Collaboration on DHRMap.
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