List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Quintessa Marketing, Rewiring America and Ridwell. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$50M - $100M
99
$25M - $50M
99
$15M
$100M - $250M
99
$25M - $50M
99
$1M - $10M
99
$50M - $100M
99
$1M - $10M
99
$53M
$50M - $100M
99
<$1M
99
<$1M
99
$12M
$1M - $10M
99
$10M - $25M
99
$25M - $50M
99
$1M - $10M
99
$1.5M
$50M - $100M
99
$10M - $25M
99
$50M - $100M
99
$10M - $25M
99
$107M
$25M - $50M
99
$1M - $10M
99
$100M - $250M
99
$50M - $100M
99
$10M - $25M
99
$3.7M
$250M - $500M
99
$50M - $100M
99
$50M - $100M
98
$18M
$10M - $25M
98
$42M
$10M - $25M
98
$1M - $10M
98
$23M
$100M - $250M
98
$25M - $50M
98
$10M - $25M
98
$1M - $10M
98
$10M - $25M
98
<$1M
98
$10K
$50M - $100M
98
$100M - $250M
98
$16M
$50M - $100M
98
$44M
$10M - $25M
98
$40M
$10M - $25M
98
$90M
$50M - $100M
98
$1B - $10B
98
$1B - $10B
98
$59M
$50M - $100M
98
$1M - $10M
98
$10M - $25M
98
$100M - $250M
98
$22M
$10M - $25M
98
$1B - $10B
98
$100M - $250M
98
$13M
$25M - $50M
98
$25M - $50M
98
$50M - $100M
98
$10M - $25M
98
$27M
$500M - $1B
98
$10M - $25M
98
$26M
$25M - $50M
98
$25M - $50M
98
$50M - $100M
98
$50M - $100M
98
$58M
$50M - $100M
98
$69M
$10M - $25M
98
$100M - $250M
98
$14M
$25M - $50M
98
$25M - $50M
98
$50M - $100M
98
$1M - $10M
98
$50M - $100M
98
$1.5M
$1M - $10M
98
$10M - $25M
98
$100M - $250M
98
$38M
$100M - $250M
98
$41M
$50M - $100M
98
$106M
$250M - $500M
98
$1M - $10M
98
$10M - $25M
98
$96M
$25M - $50M
98
$30M
$50M - $100M
98
$37M
$25M - $50M
98
$1M - $10M
98
$1M - $10M
98
$10M - $25M
98
$1M - $10M
98
$7.9M
$1M - $10M
98
$75K
<$1M
98
$50M - $100M
98
$50M - $100M
98
$38M
$25M - $50M
98
$25M - $50M
98
$68M
$50M - $100M
98
$250M - $500M
98
$1M - $10M
98
$327K
$50M - $100M
98
$50M - $100M
98
$53M
$50M - $100M
98
$100M - $250M
98
$25M - $50M
98
$50M - $100M
98
$25M - $50M
98
$1M - $10M
98
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 Quintessa Marketing, Rewiring America and Ridwell.
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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