List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including SpectrumVoIP, Springworks and Team Pumpkin. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
356
$1.3M
$25M - $50M
356
$25M - $50M
356
$41M
$500M - $1B
356
$100M - $250M
356
$50M - $100M
356
$440M
$100M - $250M
355
$307M
$10M - $25M
355
$263M
$100M - $250M
355
$1M - $10M
355
$10M - $25M
355
$245M
$100M - $250M
355
$4.1B
$500M - $1B
355
$10M - $25M
355
$332M
$50M - $100M
355
$1M - $10M
355
$195M
$100M - $250M
355
$1.5M
$1M - $10M
355
$76M
$250M - $500M
355
$2M
$1B - $10B
355
$10M - $25M
354
$10M - $25M
354
$402M
$100M - $250M
354
$25M - $50M
354
$78M
$10M - $25M
354
$100M - $250M
354
$10M - $25M
354
$452M
$1B - $10B
354
$59M
$50M - $100M
354
$50M - $100M
354
$1B - $10B
354
$250M - $500M
354
$250M - $500M
353
$25M - $50M
353
$68M
$250M - $500M
353
$181M
$100M - $250M
353
$2.6M
$250M - $500M
353
$10M - $25M
353
$100M - $250M
353
$12M
$10M - $25M
353
$10M - $25M
353
$146M
$100M - $250M
353
$25M - $50M
353
$50M - $100M
353
$25M - $50M
353
$500M - $1B
353
$8.8M
$100M - $250M
353
$500M - $1B
353
$66M
$1B - $10B
353
$50M - $100M
353
$55M
$100M - $250M
352
$76M
$1B - $10B
352
$191M
$50M - $100M
352
$10M - $25M
352
$200M
$100M - $250M
352
$250M - $500M
352
$89M
$25M - $50M
352
$151M
$25M - $50M
352
$79M
$25M - $50M
352
$151M
$50M - $100M
352
$204M
$250M - $500M
352
$100M - $250M
352
$25M - $50M
352
$250M - $500M
352
$1M - $10M
352
$450M
$50M - $100M
352
$10M - $25M
352
$118M
$1M - $10M
352
$100M - $250M
351
$1M - $10M
351
$369M
$100M - $250M
351
$250M - $500M
351
$100M - $250M
351
$50M - $100M
351
$71M
$100M - $250M
351
$1B - $10B
351
$10M - $25M
351
$1M - $10M
351
$250M - $500M
351
$100M - $250M
351
$50M - $100M
351
$250M - $500M
351
$100M - $250M
351
$100M - $250M
350
$10M - $25M
350
$10M - $25M
350
$144M
$25M - $50M
350
<$1M
350
$10M - $25M
350
$16M
$10M - $25M
350
$250M - $500M
350
$100M - $250M
350
$100M - $250M
350
$50M - $100M
349
$23M
$10M - $25M
349
$100M - $250M
349
$250M - $500M
349
$39M
$100M - $250M
349
$10M - $25M
349
$214M
$100M - $250M
349
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 SpectrumVoIP, Springworks and Team Pumpkin.
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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