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233
companies on usedby use a tool of this category
233 companies on usedby use at least one of the 7 tools in this category with a public customer. Sonar leads with 53 companies. Then come CodeRabbit (50) and mabl (41). 7 companies run two of these tools or more. The most common pair is Greptile with Momentic (3 companies).Latest check Oct 9, 2026: 242 of 242 public lines checked. Counts are of companies on usedby, not of the whole market: we list a company when a public page shows its AI tools.
Companies with a public line for each tool. Job-post signals count and are drawn apart in the proof bar.
| # | Tool | Customers | Proof |
|---|---|---|---|
| 1 |  Sonar | 53 | |
| 2 |  CodeRabbit | 50 | |
| 3 |  mabl | 41 | |
| 4 |  QA Wolf | 39 | |
| 5 |  Greptile | 25 | |
| 6 |  Momentic | 24 | |
| 7 |  Qodo | 10 |
7 companies run two of these tools or more. The most common pair is Greptile with Momentic, at 3 companies.
SonarSonar is used by 53 companies on usedby, 3 confirmed by a case study, a named quote or a press release. Customers include Freshworks, Xero, and DEPT®. Who uses Sonar, CodeRabbit vs Sonar
Customer page: sonarsource.com. Latest check of 53 of 53 lines: Oct 9, 2026.
CodeRabbitCodeRabbit is used by 50 companies on usedby, 24 confirmed by a case study, a named quote or a press release. Customers include Trivago, Cresta, and Briya. Who uses CodeRabbit, CodeRabbit vs Sonar
Customer page: coderabbit.ai. Latest check of 50 of 50 lines: Oct 8, 2026.
mablmabl is used by 41 companies on usedby, 19 confirmed by a case study, a named quote or a press release. Customers include Priceline, Workday, and Arch Insurance Group. Who uses mabl
Customer page: mabl.com. Latest check of 41 of 41 lines: Oct 9, 2026.
QA WolfQA Wolf is used by 39 companies on usedby, 26 confirmed by a case study, a named quote or a press release. Customers include Autotrader, Bubble, and Chief. Who uses QA Wolf, CodeRabbit vs QA Wolf
Customer page: qawolf.com. Latest check of 39 of 39 lines: Oct 7, 2026.
Companies first listed by a tool of this category in the last 90 days.
Side-by-side pages with the companies behind each tool.
Answers drawn from usedby data.
Sonar, used by 53 of the 233 companies on usedby in this category. Then come CodeRabbit (50) and mabl (41). Who uses Sonar.
Sonar: 53 companies on usedby, against 50 for CodeRabbit. 1 company uses both, counting every proof level (job posts included).
Yes: 7 of the 233 companies on usedby in this category run two or more. The most common pair is Greptile with Momentic (3 companies).
By the number of companies with a public line for each tool, read from dated captures of vendor customer pages, case studies, press releases and job posts. Every proof level counts in the totals and the ranking, job-post signals included (the weakest proof, shown apart in the proof bar); ties go to the stronger proofs. usedby lists a company when a public page shows it, so these counts describe the companies on usedby, not the whole market.