List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Prep for Prep, Richard Heath & Associates, Inc. (RHA) and Securin Inc.. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
245
$100M - $250M
245
$25M - $50M
245
$100M - $250M
245
$25M - $50M
245
$10M - $25M
245
$117M
$500M - $1B
245
$50M - $100M
245
$597M
$250M - $500M
245
$70M
$50M - $100M
245
$1M - $10M
245
$15M
$500M - $1B
244
$100M - $250M
244
$6.5M
$100M - $250M
244
$50M - $100M
244
$48M
$250M - $500M
244
$10M - $25M
244
$74M
$250M - $500M
244
$100M - $250M
244
$93M
$25M - $50M
244
$50M - $100M
244
$119M
$100M - $250M
244
$250M - $500M
244
$273M
$250M - $500M
244
$666M
$250M - $500M
244
$108M
$250M - $500M
244
$10M - $25M
244
$120M
$100M - $250M
244
$100M - $250M
244
$100M - $250M
244
$1M - $10M
244
$25M - $50M
244
$50M - $100M
243
$25M - $50M
243
$50M - $100M
243
$1M - $10M
243
$42M
$25M - $50M
243
$366M
$100M - $250M
243
$337M
$25M - $50M
243
$107M
$100M - $250M
243
$50M - $100M
243
$1M - $10M
243
$100M - $250M
243
$14M
$25M - $50M
243
$200M
$10M - $25M
243
$50M - $100M
243
$11M
$250M - $500M
243
$28M
$10M - $25M
243
$1M - $10M
243
$1M - $10M
243
$3M
$100M - $250M
243
$250M - $500M
242
$26M
$50M - $100M
242
$90M
$100M - $250M
242
$100M - $250M
242
$50M - $100M
242
$20M
$50M - $100M
242
$250M - $500M
242
$250M - $500M
242
$10M - $25M
242
$100M - $250M
242
$14M
$25M - $50M
242
$1B - $10B
242
$100M - $250M
242
$250M - $500M
242
$75M
$100M - $250M
242
$1M - $10M
242
$25M - $50M
242
$50M - $100M
242
$10M - $25M
242
$1M - $10M
242
$10M - $25M
242
$37M
$1M - $10M
242
$50M - $100M
242
$1M - $10M
241
$1B - $10B
241
$10M - $25M
241
$20K
$50M - $100M
241
$2.8M
$100M - $250M
241
$4.5M
<$1M
241
$100M - $250M
241
$100M - $250M
241
$100M - $250M
241
$10M - $25M
241
$1M - $10M
241
$1M - $10M
241
$250M - $500M
241
$1B - $10B
241
$10M - $25M
241
$265M
$500M - $1B
241
$100M - $250M
241
$121K
$50M - $100M
241
$25M - $50M
241
$250M - $500M
241
$14M
$1M - $10M
241
$250M - $500M
241
$100M - $250M
241
$100M - $250M
241
$100M - $250M
241
$1M - $10M
241
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 Prep for Prep, Richard Heath & Associates, Inc. (RHA) and Securin Inc..
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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