CircleCI vs PagerDuty: who uses which
Customers, public proof and the companies that use both.
On usedby, 87 companies use CircleCI and 11 use PagerDuty. 1 company uses both, including SAP. CircleCI leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Nov 13, 2026: 98 of 98 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 CircleCI, PagerDuty, or both
Every company with a public proof for at least one of the two tools.
86
listed for CircleCI only
1
company uses both
10
listed for PagerDuty only
On usedby, 86 companies are listed for CircleCI only, 10 are listed for PagerDuty only and 1 uses both, out of the 97 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 |
|---|
 SAP |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use CircleCI, PagerDuty or both: a share of the companies on usedby, not of the market.
Listed for CircleCI onlyBothListed for PagerDuty only
More common with CircleCI
- DevTools & Infrastructure10 of the 10 DevTools & Infrastructure companies on usedby that use either tool use CircleCI.
- Artificial Intelligence4 of the 5 Artificial Intelligence companies on usedby that use either tool use CircleCI.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: CircleCI, 4 of 5; PagerDuty, 0 of 5. Missing facts remain unverified, not absent features.
CircleCI
PagerDutyWhat customers report
Results as the vendor or the customer published them, with the source and the date.
CircleCI
They now spend less than 10 minutes per week on DevOps management.
Tunaiku
Vendor case study, circleci.com, published Nov 13, 2026
Since using CircleCI, Travelex has been able to save roughly £300,000 in the last five years.
Travelex
Vendor case study, circleci.com, published Nov 13, 2026
PagerDuty
reducing initial response and communications times to critical incidents by 30%
SAP
Vendor case study, pagerduty.com, published Sep 16, 2023
MTTR is now under 30 minutes
DraftKings
Vendor case study, pagerduty.com, published Jun 15, 2023
Questions about CircleCI and PagerDuty
Which is used more, CircleCI or PagerDuty?
CircleCI has more customers on usedby: 87 against 11 for PagerDuty.
Do companies use both CircleCI and PagerDuty?
Yes. 1 company uses both on usedby, including SAP.
Who uses CircleCI?
87 companies on usedby, each with the public page that shows it. See who uses CircleCI.
Who uses PagerDuty?
11 companies on usedby, each with the public page that shows it. See who uses PagerDuty.
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.