List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Fluke Reliability, Mark43 and Openly. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
377
$269M
$250M - $500M
377
$431M
$1B - $10B
377
$10M - $25M
377
$500M - $1B
377
$25M - $50M
377
$10M - $25M
377
$126M
$250M - $500M
377
$25M - $50M
376
$350M
$25M - $50M
376
$48M
$50M - $100M
376
$10M - $25M
376
$100M - $250M
376
$65M
$100M - $250M
376
$117M
$100M - $250M
376
$50M - $100M
376
$150M
$100M - $250M
376
$37M
$10M - $25M
376
$500M - $1B
376
$100M - $250M
376
$846M
$1M - $10M
376
$100M - $250M
375
$250M - $500M
375
$31M
$250M - $500M
375
$100M - $250M
375
$25M - $50M
375
$500M - $1B
375
$100M
$1M - $10M
375
$380M
$100M - $250M
375
$362M
$1B - $10B
375
$621M
$1B - $10B
375
$148M
$50M - $100M
375
$100M - $250M
375
$50M - $100M
375
$60M
$50M - $100M
375
$1.7B
$50M - $100M
375
$116M
$100M - $250M
375
$93M
$100M - $250M
375
$10M - $25M
374
$900M
$100M - $250M
374
$100M - $250M
374
$250M - $500M
374
$50M - $100M
374
$1M - $10M
374
$50M - $100M
374
$323M
$500M - $1B
374
$1.5B
$100M - $250M
374
$10M - $25M
374
$50M - $100M
374
$50M - $100M
374
$25M - $50M
374
$250M - $500M
373
$37M
$10M - $25M
373
$250M - $500M
373
$250M - $500M
373
$100M - $250M
373
$10M - $25M
373
$1.6M
$250M - $500M
373
$250M - $500M
373
$500M - $1B
373
$100M - $250M
372
$60M
$250M - $500M
372
$428M
$250M - $500M
372
$95M
$250M - $500M
372
$2.7B
$100M - $250M
372
$72M
$100M - $250M
372
$43M
$100M - $250M
372
$100M - $250M
372
$213M
$500M - $1B
372
$202M
$100M - $250M
372
$1M - $10M
372
$822M
$100M - $250M
372
$100M - $250M
372
$1M - $10M
372
$500M - $1B
372
$10M - $25M
372
$50M - $100M
372
$100M - $250M
372
$34M
$250M - $500M
372
$100M - $250M
372
$70M
$100M - $250M
371
$110M
$100M - $250M
371
$142M
$1B - $10B
371
$42M
$250M - $500M
371
$543M
$250M - $500M
371
$50M - $100M
371
$459M
$100M - $250M
371
$100M - $250M
371
$10M - $25M
371
$250M - $500M
371
$25M - $50M
371
$268M
$100M - $250M
371
$25M - $50M
371
$100M - $250M
371
$250M - $500M
371
$3M
$50M - $100M
371
$250M - $500M
371
$10M - $25M
370
$100M - $250M
370
$1M - $10M
370
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 Fluke Reliability, Mark43 and Openly.
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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