List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including ESTO Group, Engineers for a Sustainable World and FORTH®. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$49M
$1M - $10M
119
$50M - $100M
119
$100M - $250M
119
$7.8M
<$1M
119
$133M
$50M - $100M
119
$100M - $250M
119
$10M - $25M
119
$22M
$10M - $25M
119
$3.8M
$25M - $50M
119
<$1M
119
$500K
$10M - $25M
119
$58M
$1M - $10M
119
$38M
$25M - $50M
119
$100M - $250M
119
$1M - $10M
119
$100M - $250M
119
$17M
$1M - $10M
119
$12M
$50M - $100M
119
$1M
$1M - $10M
119
$14M
$50M - $100M
119
$1M - $10M
119
$10M - $25M
119
$676M
$50M - $100M
119
$50M - $100M
119
$344M
$50M - $100M
119
$10K
$100M - $250M
119
<$1M
119
$472M
$100M - $250M
119
$1M - $10M
119
$10M - $25M
119
$50M - $100M
119
$1B - $10B
119
$25M - $50M
119
$25M - $50M
119
$1M - $10M
119
$100M - $250M
119
$50M - $100M
119
$34M
$100M - $250M
119
$50M - $100M
119
$50M - $100M
119
$21M
$10M - $25M
119
$100M - $250M
119
$1M - $10M
119
$12M
$25M - $50M
119
$17M
$50M - $100M
119
$50M - $100M
119
$10M - $25M
119
$25M - $50M
119
$58M
$50M - $100M
118
$10M - $25M
118
$250M - $500M
118
$50M - $100M
118
$25M - $50M
118
$1M - $10M
118
$60M
$50M - $100M
118
$100M - $250M
118
$50M - $100M
118
$1M - $10M
118
$30M
$100M - $250M
118
$100M - $250M
118
$25M - $50M
118
$25M - $50M
118
$66M
$10M - $25M
118
$50M - $100M
118
<$1M
118
$100M
$10M - $25M
118
$100M - $250M
118
$1M - $10M
118
$16M
$25M - $50M
118
$25M - $50M
118
$41M
$100M - $250M
118
$10M - $25M
118
$50M - $100M
118
$1M - $10M
118
$10M - $25M
118
$10M - $25M
118
$400K
$10M - $25M
118
$100M - $250M
118
$250M - $500M
118
$10M - $25M
118
$50M - $100M
118
<$1M
118
$25M - $50M
118
$81M
$50M - $100M
118
$100M - $250M
118
$50M - $100M
118
$100M - $250M
118
<$1M
118
$150M
$50M - $100M
118
<$1M
118
$121M
$50M - $100M
118
$25M - $50M
118
$50M - $100M
118
$147M
$25M - $50M
118
$17M
$50M - $100M
118
$1M - $10M
118
$11M
$1M - $10M
118
$90M
$100M - $250M
118
$3M
$10M - $25M
118
$65M
$1M - $10M
118
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 ESTO Group, Engineers for a Sustainable World and FORTH®.
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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