Google Workspace vs Slack: who uses which
Customers, public proof and the companies that use both.
On usedby, 17 companies use Google Workspace and 50 use Slack. 3 companies use both, including Prem AI, Inkeep, and Wayfair. Slack leads among the Artificial Intelligence companies on usedby that use either tool.Latest check Nov 13, 2026: 67 of 67 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Google Workspace, Slack, or both
Every company with a public proof for at least one of the two tools.
14
listed for Google Workspace only
3
companies use both
47
listed for Slack only
On usedby, 14 companies are listed for Google Workspace only, 47 are listed for Slack only and 3 use both, out of the 64 companies listed for at least one. An absent listing does not prove non-use.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, Google Workspace | First public proof, Slack |
|---|---|---|
 Prem AI | On or before Nov 2026 | On or before Nov 2026 |
 Inkeep | On or before Nov 2026 | On or before Nov 2026 |
 Wayfair | — | — |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: Google Workspace, 0 of 6; Slack, 4 of 6. Missing facts remain unverified, not absent features.
Google Workspace
SlackWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Google Workspace
up to 50% ROI improvement for short-term campaigns
Incubeta
Vendor case study, workspace.google.com, published Oct 16, 2024
reaching a 100% adoption rate for Gmail and Google Calendar
Equifax
Vendor case study, workspace.google.com, published Nov 15, 2024
Slack
that would take someone more than an hour
Mural
Vendor case study, slack.com, captured Nov 12, 2026
saves me four to five hours each week
Isometric
Vendor case study, slack.com, captured Nov 12, 2026
Questions about Google Workspace and Slack
Which is used more, Google Workspace or Slack?
Slack has more customers on usedby: 50 against 17 for Google Workspace.
Do companies use both Google Workspace and Slack?
Yes. 3 companies use both on usedby, including Prem AI, Inkeep, and Wayfair.
Who uses Google Workspace?
17 companies on usedby, each with the public page that shows it. See who uses Google Workspace.
Who uses Slack?
50 companies on usedby, each with the public page that shows it. See who uses Slack.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.