Slack: Team chat. We've found 4,418 companies using Slack, most often in Software (24%) and IT Services (14%), typically with 51–200 employees and 57% based in United States.
Customers4,418companies use it
Most popular withInformation Security26× more likely than average
Typical customer51–200employees · mostly United States
We've found 4,418 companies using Slack among the 179,228 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Slack?
Slack customers are most often in Software (24%), IT Services (14%) and Financial Services (13%). The most common company size is 51–200 employees (48% of customers with a known size).
Which countries use Slack the most?
Most Slack customers we've found are in United States (57%), United Kingdom (8%) and Germany (4%).
What are the alternatives to Slack?
The most used alternatives in the same category are Adobe (12,054 companies), Zoom (9,617 companies), Webex (9,035 companies) and Miro (7,216 companies).
How does runsonwhat know a company uses Slack?
We read public traces only. For Slack that means a domain-verification record in the company's DNS and the company's published subprocessor list. Every match keeps the record it came from.
LinearDev Tools15×more likely
ZapierDev Tools11×more likely
JetBrainsDev Tools10×more likely
NotionCollaboration9.0×more likely
CursorDev Tools8.7×more likely
1PasswordSecurity & Compliance6.6×more likely
FigmaCollaboration6.5×more likely
JamfSecurity & Compliance6.3×more likely
ZoomCollaboration4.6×more likely
OpenAIAI4.5×more likely
AnthropicAI3.7×more likely
AtlassianDev Tools3.0×more likely