List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Edinburgh Airport, Ontra and Pismo. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
584
$310M
$1B - $10B
584
$118M
$100M - $250M
584
$500M - $1B
584
$100M - $250M
583
$100M - $250M
583
$540M
$500M - $1B
583
$130M
$250M - $500M
583
$100M - $250M
583
$25M - $50M
583
$50M - $100M
583
$5.4M
$25M - $50M
583
$2.8B
$250M - $500M
583
$121M
$25M - $50M
582
$50M - $100M
582
$25M - $50M
582
$551M
$100M - $250M
582
$500M - $1B
582
$166M
$500M - $1B
582
$50M - $100M
582
$25M - $50M
582
$10M - $25M
582
$624M
$500M - $1B
582
$224M
$250M - $500M
581
$500M - $1B
581
$1M - $10M
581
$1B - $10B
581
$4.5B
$250M - $500M
581
$273M
$100M - $250M
581
$34M
$250M - $500M
580
$25M - $50M
580
$500M - $1B
580
$500M - $1B
580
$10M - $25M
580
$562M
$100M - $250M
580
$235M
$250M - $500M
580
$250M - $500M
580
$50M - $100M
580
$1M - $10M
580
$1M - $10M
579
$235M
$500M - $1B
579
$50M - $100M
579
$383M
$50M - $100M
579
$100M - $250M
579
$500M - $1B
579
$17M
$500M - $1B
579
$3.2M
$100M - $250M
578
$100M - $250M
578
$297M
$250M - $500M
578
$97M
$500M - $1B
578
$100M - $250M
578
$1.2B
$100M - $250M
577
$50M - $100M
577
$250M - $500M
577
$250M - $500M
577
$100M - $250M
577
$25M - $50M
576
$250M - $500M
576
$1.4B
$250M - $500M
576
$100M - $250M
575
$1.5B
$100M - $250M
575
$100M - $250M
575
$19M
$1M - $10M
574
$133M
$50M - $100M
574
$250M - $500M
574
$1M - $10M
574
$1B - $10B
573
$126M
$100M - $250M
573
$233M
$500M - $1B
573
$78M
$250M - $500M
573
$262M
$1B - $10B
573
$10M
$100M - $250M
573
$25M - $50M
573
$50M - $100M
573
$1M - $10M
573
$188M
$25M - $50M
573
$500M
$25M - $50M
572
$310M
$1B - $10B
572
$250M - $500M
572
$411M
$500M - $1B
572
$1.6B
$250M - $500M
571
$10M
$250M - $500M
571
$100M - $250M
571
$949M
$500M - $1B
571
$500M - $1B
571
$1B - $10B
570
$500M - $1B
570
$22M
$100M - $250M
570
$100M - $250M
570
$50M - $100M
570
$100M - $250M
569
$250M - $500M
569
$169M
$500M - $1B
569
$1M - $10M
569
$500M - $1B
568
$10M - $25M
568
$110M
$500M - $1B
568
$67M
$10M - $25M
568
$365M
$500M - $1B
567
$100M - $250M
567
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 Edinburgh Airport, Ontra and Pismo.
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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Top companies by employee count
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