List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Carnegie Mellon University - Heinz College of Information Systems and Public Policy, Certa.ai and Clever Age. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
266
$52M
$25M - $50M
266
$2.9M
$25M - $50M
266
$100M - $250M
266
$40M
$250M - $500M
266
$12M
$100M - $250M
266
$95M
$10M - $25M
266
$23M
$100M - $250M
266
$50M - $100M
266
$67M
$50M - $100M
266
$109M
$100M - $250M
266
$974M
$250M - $500M
266
$100M - $250M
266
$6.6M
$25M - $50M
266
$50M - $100M
265
$50M - $100M
265
$100M - $250M
265
$2.7M
$1M - $10M
265
$250M - $500M
265
$10M - $25M
265
$50M - $100M
265
$10M - $25M
265
$100M - $250M
265
$100K
$50M - $100M
265
$50M - $100M
265
$1B - $10B
265
$10M - $25M
265
$11M
$25M - $50M
265
$50M - $100M
265
$30M
$50M - $100M
265
$25M - $50M
265
$17M
$10M - $25M
265
$1M - $10M
265
$117M
$1B - $10B
265
$182M
$1B - $10B
265
$3.6M
$250M - $500M
265
$100M - $250M
265
$100M - $250M
264
$106M
$100M - $250M
264
$100M - $250M
264
<$1M
264
$25M - $50M
264
$100M - $250M
264
$29M
$10M - $25M
264
$500M - $1B
264
$115M
$500M - $1B
264
$100M - $250M
264
$25M - $50M
264
$25M - $50M
264
$190M
$250M - $500M
264
$10M - $25M
264
$55M
$10M - $25M
264
$2.3M
$1M - $10M
264
$147M
$100M - $250M
264
$10M - $25M
264
$66M
$250M - $500M
264
$500M - $1B
263
$100M - $250M
263
$213M
$100M - $250M
263
$175M
$250M - $500M
263
$1M - $10M
263
$50M - $100M
263
$102M
$100M - $250M
263
$25M - $50M
263
$100M - $250M
263
$32M
$1M - $10M
263
$38M
$10M - $25M
263
$141M
$250M - $500M
263
$417K
$1M - $10M
263
$100M - $250M
263
$10M - $25M
263
$1M - $10M
263
$10M - $25M
263
$101M
$1M - $10M
263
$100M - $250M
263
$100M - $250M
262
$250M - $500M
262
$137M
$1B - $10B
262
$1B - $10B
262
$224M
$100M - $250M
262
$220M
$250M - $500M
262
$763M
$50M - $100M
262
$100M - $250M
262
$10M - $25M
262
$102M
$50M - $100M
262
$25M - $50M
262
$30M
$25M - $50M
262
$500M - $1B
262
$250M - $500M
262
$100M - $250M
262
$25M - $50M
262
$26M
$50M - $100M
262
$23M
$100M - $250M
262
$152M
$50M - $100M
261
$250M - $500M
261
$1M - $10M
261
$100M - $250M
261
$137M
$50M - $100M
261
$50M - $100M
261
$100M - $250M
261
About companies using Slack
Why target companies using Slack?
Slack is a Collaboration & productivity technology. The office suite, chat and project tools a company standardizes on decide which integrations and add-ons fit. Companies on the list include Carnegie Mellon University - Heinz College of Information Systems and Public Policy, Certa.ai and Clever Age.
Which industries use Slack the most?
Among companies using Slack on LeadIQ, the most common industries are Software Development, IT Services and IT Consulting, Financial Services, Technology, Information and Internet, Advertising Services and Higher Education. Narrow your list to the industry you sell into from there.
Where are companies using Slack located?
Companies using Slack are most often headquartered in the United States, the United Kingdom, Canada, France, Germany and Australia.
What other Collaboration & productivity technologies do companies use?
Prospecting the wider Collaboration & productivity space? Related technologies with their own company lists include Microsoft 365, Google Workspace, Microsoft SharePoint and Microsoft Teams.
How do I reach decision makers at companies using Slack?
Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.
Insights based on LeadIQ data refreshed in September 2026.
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