Slack
15,307 sites detectedOther · #7 of 164Updated October 2026
Companies using Slack
| # | Company | Industry | Location | First seen | Evidence |
|---|---|---|---|---|---|
| 1 | Healthcare & Life Sciences | New York, US | Apr 2026 | DNS TXT record | |
| 2 | HR & People Tech | Framingham, US | May 2026 | DNS TXT record | |
| 3 | Professional Services | San Francisco, US | Jun 2026 | DNS TXT record | |
| 4 | Financial Services & Fintech | Saint Helier, JE | May 2026 | DNS TXT record | |
| 5 | Education & Learning | – | Apr 2026 | DNS TXT record | |
| 6 | Software & SaaS | London, GB | Apr 2026 | DNS TXT record | |
| 7 | Healthcare & Life Sciences | US | May 2026 | DNS TXT record | |
| 8 | Software & SaaS | – | Sept 2026 | DNS TXT record | |
| 9 | Financial Services & Fintech | – | Sept 2026 | DNS TXT record | |
| 10 | Healthcare & Life Sciences | US | Sept 2026 | DNS TXT record |
See all 15,307 sites detected using Slack
Showing 10 of 15,307 sites detected. The customer list has every company, the new customers this month, filters and downloads.
Who uses Slack
New customers per week
Companies we saw start using it, from 21 September 2026.
By sector
74% of 145 sampled customers have a known sector.
By country
Country is known for 31% of 145 sampled customers.
Also used by these customers
Share of sampled Slack customers running each tool.
Other: share by companies
Slack is #7 of 164, with 0% of companies running a tool in this category.
How we found them
Share of sampled customers by where the evidence was.
Every company in the list shows which kind of evidence we found and when. Data quality
Every company using Slack
The customer list shows who they are, the evidence for each one and who started this month.