# Code review & testing tools used by Technology & Connectivity companies

usedby lists 73 Technology & Connectivity companies using 7 Code review & testing tools. The most used is CodeRabbit: 20 of the 73 Technology & Connectivity companies on usedby, every proof level counted. These are counts of the companies usedby tracks, not a market share. Data as of 2026-10-25.

## Largest and best-proven users

Two labelled views of the same companies. Neither is a score.

### Largest companies

By employee range. Size known for 47 of 73.

| Company | Proof | Employees | Tools | Last check |
|---|---|---|---|---|
| [Nvidia](https://www.usedby.ai/companies/nvidia.md) | Confirmed | 10,001+ | CodeRabbit, Greptile, Sonar, Qodo | 2026-10-24 |
| [Visma](https://www.usedby.ai/companies/visma.md) | Confirmed | 10,001+ | CodeRabbit | 2026-10-24 |
| [NEC](https://www.usedby.ai/companies/nec.md) | Observed | 10,001+ | mabl | 2026-10-25 |

### Strongest proof

Confirmed or declared: 26 of 73. This view filters what you read, never what is counted.

| Company | Proof | Employees | Tools | Last check |
|---|---|---|---|---|
| [Barracuda](https://www.usedby.ai/companies/barracuda.md) | Confirmed | Unknown | mabl | 2026-10-25 |
| [Karpel Solutions](https://www.usedby.ai/companies/karpel-solutions.md) | Confirmed | 51–200 | mabl | 2026-10-25 |
| [SealingTech](https://www.usedby.ai/companies/sealingtech.md) | Confirmed | Unknown | mabl | 2026-10-25 |

## Ranking

Tools ranked by the companies of the 73 Technology & Connectivity companies on usedby that use them. Each company counts once per tool, at its strongest proof. Ties go to more confirmed, then declared, then observed companies.

| # | Tool | Companies | Confirmed | Declared | Observed | Job posts only | Last check |
|---|---|---|---|---|---|---|---|
| 1 | [CodeRabbit](https://www.usedby.ai/tools/coderabbit.md) | 20 | 9 | 0 | 11 | 0 | 2026-10-24 |
| 2 | [Greptile](https://www.usedby.ai/tools/greptile.md) | 14 | 5 | 0 | 9 | 0 | 2026-10-17 |
| 3 | [Sonar](https://www.usedby.ai/tools/sonar.md) | 14 | 0 | 0 | 13 | 1 | 2026-10-24 |
| 4 | [mabl](https://www.usedby.ai/tools/mabl.md) | 9 | 6 | 0 | 3 | 0 | 2026-10-25 |
| 5 | [QA Wolf](https://www.usedby.ai/tools/qa-wolf.md) | 8 | 4 | 0 | 4 | 0 | 2026-10-24 |
| 6 | [Momentic](https://www.usedby.ai/tools/momentic.md) | 8 | 2 | 0 | 6 | 0 | 2026-10-17 |
| 7 | [Qodo](https://www.usedby.ai/tools/qodo.md) | 4 | 0 | 0 | 4 | 0 | 2026-10-05 |

## Customers per tool

Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote, a press release, or the company's own public account of using the tool (its own site, or a post by one of its executives, VP or above)), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). A line the company declared to usedby itself, or that it lists as a sub-processor on its own legal page, is marked declared. A signal is never a case study or a vendor listing. Strongest proof first. "Last check" is the later of the line's re-verification and its latest capture.

| Tool | Company | Proof | Source | Last check |
|---|---|---|---|---|
| CodeRabbit | [Capacity](https://www.usedby.ai/companies/capacity.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/capacity-saves-five-weeks-of-developer-review-time-with-coderabbit), captured 2026-10-08 | 2026-10-24 |
| CodeRabbit | [Clerk](https://www.usedby.ai/companies/clerk.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/inside-clerks-40-percent-faster-merge-workflow-with-coderabbit), captured 2026-10-06 | 2026-10-24 |
| CodeRabbit | [Langflow](https://www.usedby.ai/companies/langflow.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/langflow-boosts-merge-confidence-by-50-with-coderabbit), captured 2026-10-08 | 2026-10-24 |
| CodeRabbit | [Mastra](https://www.usedby.ai/companies/mastra.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/mastra-finally-found-an-ai-code-review-tool-their-team-can-trust), captured 2026-10-08 | 2026-10-24 |
| CodeRabbit | [NetSPI](https://www.usedby.ai/companies/netspi.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/how-netspi-brings-code-quality-back-in-line-with-ai-driven-throughput-with-coderabbit), captured 2026-10-19 | 2026-10-24 |
| CodeRabbit | [Plane](https://www.usedby.ai/companies/plane.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/how-codeRabbit-helped-plane-get-their-release-schedule-back-on-track), captured 2026-10-08 | 2026-10-24 |
| CodeRabbit | [testRigor](https://www.usedby.ai/companies/testrigor.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/how-testrigor-protects-code-quality-as-ai-generated-development-scales), captured 2026-10-08 | 2026-10-24 |
| CodeRabbit | [Visma](https://www.usedby.ai/companies/visma.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/how-visma-found-the-enhance-code-quality-and-streamline-reviews), captured 2026-10-06 | 2026-10-24 |
| CodeRabbit | [Abnormal](https://www.usedby.ai/companies/abnormal.md) | Confirmed | [coderabbit.ai](https://www.coderabbit.ai/case-studies/how-abnormal-ai-scales-autonomous-development-with-coderabbit), captured 2026-10-06 | 2026-10-24 |
| CodeRabbit | [Nvidia](https://www.usedby.ai/companies/nvidia.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Bun](https://www.usedby.ai/companies/bun.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Campfire](https://www.usedby.ai/companies/campfire.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Dialpad](https://www.usedby.ai/companies/dialpad.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Expanso](https://www.usedby.ai/companies/expanso.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [FloxDev](https://www.usedby.ai/companies/floxdev.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Hasura](https://www.usedby.ai/companies/hasura.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Hatica](https://www.usedby.ai/companies/hatica.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [JFrog](https://www.usedby.ai/companies/jfrog.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Memberstack](https://www.usedby.ai/companies/memberstack.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| CodeRabbit | [Sisense](https://www.usedby.ai/companies/sisense.md) | Observed | [coderabbit.ai](https://www.coderabbit.ai/customers), captured 2026-10-24 | 2026-10-24 |
| Greptile | [Nvidia](https://www.usedby.ai/companies/nvidia.md) | Confirmed | [greptile.com](https://www.greptile.com/customers/nvidia), captured 2026-10-07 | 2026-10-17 |
| Greptile | [Datadog](https://www.usedby.ai/companies/datadog.md) | Confirmed | [greptile.com](https://www.greptile.com/customers/brex), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Mixpanel](https://www.usedby.ai/companies/mixpanel.md) | Confirmed | [greptile.com](https://www.greptile.com/customers/brex), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Scale AI](https://www.usedby.ai/companies/scale-ai.md) | Confirmed | [greptile.com](https://www.greptile.com/customers/brex), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Gumloop](https://www.usedby.ai/companies/gumloop.md) | Confirmed | [greptile.com](https://www.greptile.com/customers/gumloop), captured 2026-10-07 | 2026-10-17 |
| Greptile | [Retool](https://www.usedby.ai/companies/retool.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Vanta](https://www.usedby.ai/companies/vanta.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Zapier](https://www.usedby.ai/companies/zapier.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Bland.com](https://www.usedby.ai/companies/bland-com.md) | Observed | [greptile.com](https://www.greptile.com/), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Browserbase](https://www.usedby.ai/companies/browserbase.md) | Observed | [greptile.com](https://www.greptile.com/), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Mintlify](https://www.usedby.ai/companies/mintlify.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Posthog](https://www.usedby.ai/companies/posthog.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [WorkOS](https://www.usedby.ai/companies/workos.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Greptile | [Decagon](https://www.usedby.ai/companies/decagon.md) | Observed | [greptile.com](https://www.greptile.com/customers), captured 2026-10-17 | 2026-10-17 |
| Sonar | [Microsoft](https://www.usedby.ai/companies/microsoft.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Nvidia](https://www.usedby.ai/companies/nvidia.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Cisco](https://www.usedby.ai/companies/cisco.md) | Observed | [sonarsource.com](https://www.sonarsource.com/customer-stories/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [HP](https://www.usedby.ai/companies/hp.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [T-Mobile](https://www.usedby.ai/companies/t-mobile.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Vodafone](https://www.usedby.ai/companies/vodafone.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [ASML](https://www.usedby.ai/companies/asml.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Broadcom](https://www.usedby.ai/companies/broadcom.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Capgemini](https://www.usedby.ai/companies/capgemini.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Cognizant](https://www.usedby.ai/companies/cognizant.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [NTT Data](https://www.usedby.ai/companies/ntt-data.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [ServiceNow](https://www.usedby.ai/companies/servicenow.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [DXC](https://www.usedby.ai/companies/dxc.md) | Observed | [sonarsource.com](https://www.sonarsource.com/company/customers/), captured 2026-10-24 | 2026-10-24 |
| Sonar | [Fivetran](https://www.usedby.ai/companies/fivetran.md) | Signal (job post) | [fivetran.com](https://www.fivetran.com/careers/job?gh_jid=7894565003), captured 2026-10-22 | 2026-10-22 |
| mabl | [Barracuda](https://www.usedby.ai/companies/barracuda.md) | Confirmed | [mabl.com](https://www.mabl.com/customer-stories/barracuda-partners-with-mabl-to-deliver-high-quality-security-solutions), captured 2026-10-25 | 2026-10-25 |
| mabl | [Karpel Solutions](https://www.usedby.ai/companies/karpel-solutions.md) | Confirmed | [mabl.com](https://www.mabl.com/customer-stories/quality-software-tested-early-and-often-with-mabl-karpel-success-story), captured 2026-10-09 | 2026-10-25 |
| mabl | [SealingTech](https://www.usedby.ai/companies/sealingtech.md) | Confirmed | [mabl.com](https://www.mabl.com/customer-stories/sealingtech-agentic-test-automation), captured 2026-10-07 | 2026-10-25 |
| mabl | [SmugMug](https://www.usedby.ai/companies/smugmug.md) | Confirmed | [mabl.com](https://www.mabl.com/customer-stories/smugmug-builds-culture-of-quality-mabl), captured 2026-10-09 | 2026-10-25 |
| mabl | [Stack Overflow](https://www.usedby.ai/companies/stack-overflow.md) | Confirmed | [mabl.com](https://www.mabl.com/videos/customer-spotlight-stack-overflow), captured 2026-10-09 | 2026-10-25 |
| mabl | [Tamr](https://www.usedby.ai/companies/tamr.md) | Confirmed | [mabl.com](https://www.mabl.com/customer-stories/tamr-transforms-software-quality-with-mabl), captured 2026-10-09 | 2026-10-25 |
| mabl | [Aptean](https://www.usedby.ai/companies/aptean.md) | Observed | [mabl.com](https://www.mabl.com/customer-stories), captured 2026-10-25 | 2026-10-25 |
| mabl | [DataRobot](https://www.usedby.ai/companies/datarobot.md) | Observed | [mabl.com](https://www.mabl.com/customer-stories), captured 2026-10-25 | 2026-10-25 |
| mabl | [NEC](https://www.usedby.ai/companies/nec.md) | Observed | [mabl.com](https://www.mabl.com/customer-stories), captured 2026-10-25 | 2026-10-25 |
| QA Wolf | [Bubble](https://www.usedby.ai/companies/bubble.md) | Confirmed | [qawolf.com](https://www.qawolf.com/customers/bubble), captured 2026-10-07 | 2026-10-24 |
| QA Wolf | [Drata](https://www.usedby.ai/companies/drata.md) | Confirmed | [qawolf.com](https://www.qawolf.com/customers/drata), captured 2026-10-07 | 2026-10-24 |
| QA Wolf | [GUIDEcx](https://www.usedby.ai/companies/guidecx.md) | Confirmed | [qawolf.com](https://www.qawolf.com/customers/guidecx), captured 2026-10-07 | 2026-10-24 |
| QA Wolf | [Xima](https://www.usedby.ai/companies/xima.md) | Confirmed | [qawolf.com](https://www.qawolf.com/customers/xima), captured 2026-10-07 | 2026-10-24 |
| QA Wolf | [Figma](https://www.usedby.ai/companies/figma.md) | Observed | [qawolf.com](https://www.qawolf.com/pricing), captured 2026-10-24 | 2026-10-24 |
| QA Wolf | [Grafana Labs](https://www.usedby.ai/companies/grafana-labs.md) | Observed | [qawolf.com](https://www.qawolf.com/pricing), captured 2026-10-24 | 2026-10-24 |
| QA Wolf | [Braintrust](https://www.usedby.ai/companies/braintrust.md) | Observed | [qawolf.com](https://www.qawolf.com/pricing), captured 2026-10-24 | 2026-10-24 |
| QA Wolf | [Napster](https://www.usedby.ai/companies/napster.md) | Observed | [qawolf.com](https://www.qawolf.com/customers), captured 2026-10-24 | 2026-10-24 |
| Momentic | [Retool](https://www.usedby.ai/companies/retool.md) | Confirmed | [momentic.ai](https://momentic.ai/customers/quora), captured 2026-10-17 | 2026-10-17 |
| Momentic | [GPTZero](https://www.usedby.ai/companies/gptzero.md) | Confirmed | [momentic.ai](https://momentic.ai/customers/quora), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Notion](https://www.usedby.ai/companies/notion.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Webflow](https://www.usedby.ai/companies/webflow.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Framer](https://www.usedby.ai/companies/framer.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Kumo](https://www.usedby.ai/companies/kumo.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Runway](https://www.usedby.ai/companies/runway.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Momentic | [Vapi](https://www.usedby.ai/companies/vapi.md) | Observed | [momentic.ai](https://momentic.ai/pricing), captured 2026-10-17 | 2026-10-17 |
| Qodo | [Nvidia](https://www.usedby.ai/companies/nvidia.md) | Observed | [qodo.ai](https://www.qodo.ai/pricing/), captured 2026-10-05 | 2026-10-05 |
| Qodo | [Intel](https://www.usedby.ai/companies/intel.md) | Observed | [qodo.ai](https://www.qodo.ai/), captured 2026-10-05 | 2026-10-05 |
| Qodo | [Box](https://www.usedby.ai/companies/box.md) | Observed | [qodo.ai](https://www.qodo.ai/pricing/), captured 2026-10-05 | 2026-10-05 |
| Qodo | [LoopUp](https://www.usedby.ai/companies/loopup.md) | Observed | [qodo.ai](https://www.qodo.ai/blog/category/case-study/), captured 2026-10-05 | 2026-10-05 |

## Method

Public customer lines of active Code review & testing tools at companies classified in Technology & Connectivity. 1 company that sells software was left out, so a vendor is never counted as a user. Company mix by strongest proof: 26 confirmed, 0 declared, 46 observed and 1 signal.

## Questions

### Which Code review & testing tools do Technology & Connectivity companies use most?

CodeRabbit leads: 20 of the 73 Technology & Connectivity companies on usedby that use Code review & testing tools use it. Next: Greptile (14), Sonar (14), mabl (9), and QA Wolf (8).

### How many Technology & Connectivity companies use Code review & testing tools?

73 Technology & Connectivity companies on usedby use at least one of 7 Code review & testing tools. It counts the companies usedby tracks.

### What proof backs these lines?

Of the 73 companies, each counted at its strongest proof: 26 confirmed, 0 declared, 46 observed and 1 known from a job post.

### How does usedby build this ranking?

usedby counts each Technology & Connectivity company once per tool, from public proof: case studies, press releases, the company's own site or its declaration to usedby, vendor customer pages and job posts. 1 software vendor is left out. Every line shows its proof and the date usedby last checked it.

Code review & testing by industry within Technology & Connectivity: [DevTools & Infrastructure](https://www.usedby.ai/companies/industry/devtools-infrastructure/code-review-testing.md) (26)

Industry page: https://www.usedby.ai/companies/industry/technology-connectivity.md · Category page: https://www.usedby.ai/tools/category/code-review-testing.md

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Source: https://www.usedby.ai/companies/industry/technology-connectivity/code-review-testing · How we check: https://www.usedby.ai/methodology