List of Companies Using Slack
Prospecting companies using Slack? Here they are, biggest first, including Upstream USA, Valo Health and Vibe.co. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
211
$460M
$100M - $250M
211
$79M
$100M - $250M
211
$59M
$100M - $250M
211
$21M
$25M - $50M
211
$154M
$25M - $50M
210
$153M
$250M - $500M
210
$50M - $100M
210
$25M - $50M
210
$10M - $25M
210
$250M - $500M
210
$18M
$100M - $250M
210
$79M
$100M - $250M
210
$113M
$25M - $50M
210
<$1M
210
$50M - $100M
210
$175M
$50M - $100M
210
$25M - $50M
210
$33M
$50M - $100M
210
$1M - $10M
210
$50M - $100M
210
$10M - $25M
210
$1M - $10M
210
$600K
$100M - $250M
210
$1M - $10M
209
$1M - $10M
209
$3.5M
$50M - $100M
209
$201M
$100M - $250M
209
$500M - $1B
209
$100M - $250M
209
$1M - $10M
209
$250M - $500M
209
$250M - $500M
209
$500M - $1B
209
$9.4M
$100M - $250M
209
$1.5M
$1M - $10M
209
$2M
$25M - $50M
209
$50M - $100M
209
$100M - $250M
209
$676M
$50M - $100M
209
$50M - $100M
209
$50M - $100M
209
$50M - $100M
209
$25M - $50M
209
$247M
$50M - $100M
209
$1.8M
$1M - $10M
209
$5M
<$1M
209
$250M - $500M
209
$2.9M
$1M - $10M
208
$431M
$50M - $100M
208
$100M - $250M
208
$134M
$25M - $50M
208
$100M - $250M
208
$136M
$50M - $100M
208
$81M
$250M - $500M
208
$100M - $250M
208
$50M - $100M
208
$250M - $500M
208
$25M
$100M - $250M
208
$72M
$50M - $100M
208
$1M - $10M
208
$50M - $100M
208
$53M
$1M - $10M
208
$25M - $50M
208
$138M
$25M - $50M
208
$25M - $50M
208
$1M - $10M
208
$1M - $10M
208
$50M - $100M
208
$50M - $100M
208
$1M - $10M
208
$39M
$25M - $50M
208
$850M
$500M - $1B
208
$50M - $100M
208
$46M
$500M - $1B
208
$12M
$1M - $10M
208
$120M
$10M - $25M
208
$49M
$25M - $50M
208
$323M
$25M - $50M
207
$1M - $10M
207
$10B+
207
$10M - $25M
207
$100M - $250M
207
$35M
$100M - $250M
207
$1B - $10B
207
$100M - $250M
207
$15M
$100M - $250M
207
$80M
$100M - $250M
207
$554M
$100M - $250M
207
$253M
$25M - $50M
207
$95M
$250M - $500M
207
$100M - $250M
207
$1M - $10M
207
$50M - $100M
207
$271M
$25M - $50M
207
$3.7B
$25M - $50M
207
$2.3M
$50M - $100M
207
$100M - $250M
207
$110M
$100M - $250M
207
$262M
$500M - $1B
207
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 Upstream USA, Valo Health and Vibe.co.
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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