Endor Labs vs Sonar: who uses which
Customers, public proof and the companies that use both.
On usedby, 24 companies use Endor Labs and 53 use Sonar. 1 company uses both, including Citi. Endor Labs leads among the DevTools & Infrastructure companies on usedby that use either tool, Sonar among the IT Services & System Integration companies.Latest check Oct 7, 2026: 77 of 77 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Endor Labs, Sonar, or both
Every company with a public proof for at least one of the two tools.
23
use only Endor Labs
1
company uses both
52
use only Sonar
23 companies use only Endor Labs, 52 use only Sonar and 1 uses both, out of the 76 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 6, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 Citi |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Endor Labs, Sonar or both: a share of the companies on usedby, not of the market.
Endor Labs onlyBothSonar only
More common with Endor Labs
- DevTools & Infrastructure5 of the 7 DevTools & Infrastructure companies on usedby that use either tool use Endor Labs.
More common with Sonar
- IT Services & System Integration7 of the 7 IT Services & System Integration companies on usedby that use either tool use Sonar.
- Banking & Mortgages5 of the 5 Banking & Mortgages companies on usedby that use either tool use Sonar, 1 of them alongside Endor Labs.
Source: confirmed and observed usedby lines. Job-post signals, the weakest proof level, are left out of these shares.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Endor LabsSonarWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Endor Labs
No reviewed story for Endor Labs yet.
Sonar
issues are identified 60% faster
DEPT®
Vendor case study, sonarsource.com, published Dec 31, 2025
onboard 3,500 repositories
Xero
Vendor case study, sonarsource.com, published Apr 10, 2026
Questions about Endor Labs and Sonar
Which is used more, Endor Labs or Sonar?
Sonar has more customers on usedby: 53 against 24 for Endor Labs. Endor Labs leads among the DevTools & Infrastructure companies on usedby that use either tool, Sonar among the IT Services & System Integration companies.
Do companies use both Endor Labs and Sonar?
Yes. 1 company uses both on usedby, including Citi.
Who uses Endor Labs?
24 companies on usedby, each with the public page that shows it. See who uses Endor Labs.
Who uses Sonar?
53 companies on usedby, each with the public page that shows it. See who uses Sonar.
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 three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.