# The most used developer tools

As of October 2026, the most used of the 57 developer tools runsonwhat tracks is Atlassian, found at 64,640 companies, ahead of Cursor (6,089) and TeamViewer (4,369).

Developer tools cover how software gets built: AI code editors and agents (Cursor, Devin, Amp, Lovable), internal tool builders (Retool), containers and infrastructure tooling (Docker, HashiCorp), IDEs (JetBrains) and build systems.

Like other internal tools, they're seen mostly through domain verification and subprocessor lists, so the counts are a floor rather than an estimate of total usage.

## Developer tools ranked by companies using them

| # | Tool | Companies | Share of category | Last 30 days | Most popular with |
|---|---|---|---|---|---|
| 1 | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | 64,640 | 61% | +183 −23 | 10,000+ employees (4.2×) |
| 2 | [Cursor](https://www.runsonwhat.com/reverse/cursor) | 6,089 | 5.7% | +42 −2 | Software (4.8×) |
| 3 | [TeamViewer](https://www.runsonwhat.com/reverse/teamviewer) | 4,369 | 4.1% | +21 −6 | 5,001–10,000 employees (12×) |
| 4 | [Docker](https://www.runsonwhat.com/reverse/docker) | 3,005 | 2.8% | +33 −3 | 10,000+ employees (22×) |
| 5 | [Postman](https://www.runsonwhat.com/reverse/postman) | 2,874 | 2.7% | +16 −1 | 10,000+ employees (8.3×) |
| 6 | [HubSpot App Developer](https://www.runsonwhat.com/reverse/hubspot-developer) | 2,515 | 2.4% | +18 −1 | Software (6.0×) |
| 7 | [Zapier](https://www.runsonwhat.com/reverse/zapier) | 2,148 | 2.0% | +14 −1 | – |
| 8 | [BugHerd](https://www.runsonwhat.com/reverse/bugherd) | 2,054 | 1.9% | – | Non-profit Organization Management (2.5×) |
| 9 | [JetBrains](https://www.runsonwhat.com/reverse/jetbrains) | 1,672 | 1.6% | +10 −1 | Software (4.7×) |
| 10 | [Amp](https://www.runsonwhat.com/reverse/amp) | 1,584 | 1.5% | – | Medical Practice (4.7×) |
| 11 | [Citrix](https://www.runsonwhat.com/reverse/citrix) | 1,521 | 1.4% | +81 | 5,001–10,000 employees (6.6×) |
| 12 | [Lovable](https://www.runsonwhat.com/reverse/lovable) | 1,495 | 1.4% | +8 −2 | 10,000+ employees (4.1×) |
| 13 | [Replit](https://www.runsonwhat.com/reverse/replit) | 1,189 | 1.1% | +5 −1 | Internet (2.5×) |
| 14 | [Marker.io](https://www.runsonwhat.com/reverse/marker-io) | 1,004 | 0.95% | – | Hospitality (2.2×) |
| 15 | [HashiCorp Cloud](https://www.runsonwhat.com/reverse/hashicorp) | 855 | 0.80% | +7 | 10,000+ employees (17×) |
| 16 | [Maven Central](https://www.runsonwhat.com/reverse/maven-central) | 850 | 0.80% | −1 | Software (6.5×) |
| 17 | [Linear](https://www.runsonwhat.com/reverse/linear) | 835 | 0.79% | +4 | – |
| 18 | [Cisco Intersight](https://www.runsonwhat.com/reverse/cisco-intersight) | 792 | 0.75% | +139 −1 | 10,000+ employees (27×) |
| 19 | [Loader.io](https://www.runsonwhat.com/reverse/loader-io) | 626 | 0.59% | +43 −2 | Internet (2.9×) |
| 20 | [Flexera](https://www.runsonwhat.com/reverse/flexera) | 598 | 0.56% | +11 −2 | 10,000+ employees (54×) |
| 21 | [Parallels](https://www.runsonwhat.com/reverse/parallels) | 587 | 0.55% | +5 | 1,001–5,000 employees (5.4×) |
| 22 | [Userback](https://www.runsonwhat.com/reverse/userback) | 454 | 0.43% | +1 −1 | 51–200 employees (1.6×) |
| 23 | [GitHub](https://www.runsonwhat.com/reverse/github) | 396 | 0.37% | +1 | Engineering, Product and Design (293×) |
| 24 | [MuleSoft Anypoint](https://www.runsonwhat.com/reverse/mulesoft) | 340 | 0.32% | +2 | 10,000+ employees (21×) |
| 25 | [ExternalDNS](https://www.runsonwhat.com/reverse/externaldns) | 316 | 0.30% | +18 | Internet (5.2×) |
| 26 | [GitLab](https://www.runsonwhat.com/reverse/gitlab) | 286 | 0.27% | – | Software (4.9×) |
| 27 | [Usersnap](https://www.runsonwhat.com/reverse/usersnap) | 263 | 0.25% | +1 | Primary/secondary Education (28×) |
| 28 | [Rhino](https://www.runsonwhat.com/reverse/rhino) | 252 | 0.24% | +17 | Architecture & Planning (78×) |
| 29 | [BrowserStack](https://www.runsonwhat.com/reverse/browserstack) | 243 | 0.23% | +2 | 1,001–5,000 employees (7.3×) |
| 30 | [Reftab](https://www.runsonwhat.com/reverse/reftab) | 219 | 0.21% | −1 | 1,001–5,000 employees (4.8×) |
| 31 | [Apigee](https://www.runsonwhat.com/reverse/apigee) | 200 | 0.19% | – | 10,000+ employees (38×) |
| 32 | [Kiro](https://www.runsonwhat.com/reverse/kiro) | 194 | 0.18% | – | 10,000+ employees (26×) |
| 33 | [GitKraken](https://www.runsonwhat.com/reverse/gitkraken) | 179 | 0.17% | +1 | 1,001–5,000 employees (6.8×) |
| 34 | [Make](https://www.runsonwhat.com/reverse/make) | 155 | 0.15% | +1 | Software (4.5×) |
| 35 | [Argo CD](https://www.runsonwhat.com/reverse/argocd) | 128 | 0.12% | – | – |
| 36 | [Windsurf](https://www.runsonwhat.com/reverse/windsurf) | 123 | 0.12% | – | Software (5.4×) |
| 37 | [Bitrise](https://www.runsonwhat.com/reverse/bitrise) | 117 | 0.11% | +4 −1 | 201–1,000 employees (3.0×) |
| 38 | [Unity](https://www.runsonwhat.com/reverse/unity) | 113 | 0.11% | +1 −1 | Video Games (197×) |
| 39 | [Base44](https://www.runsonwhat.com/reverse/base44) | 112 | 0.11% | – | 201–1,000 employees (2.2×) |
| 40 | [Serval](https://www.runsonwhat.com/reverse/serval) | 109 | 0.10% | +6 | 201–1,000 employees (3.8×) |
| 41 | [Qase](https://www.runsonwhat.com/reverse/qase) | 98 | <0.1% | +16 | 201–1,000 employees (3.5×) |
| 42 | [Insomnia](https://www.runsonwhat.com/reverse/insomnia) | 91 | <0.1% | +2 | – |
| 43 | [Apidog](https://www.runsonwhat.com/reverse/apidog) | 76 | <0.1% | +1 −1 | Software (6.4×) |
| 44 | [Gradle Develocity](https://www.runsonwhat.com/reverse/gradle) | 76 | <0.1% | – | Software (8.9×) |
| 45 | [Retool](https://www.runsonwhat.com/reverse/retool) | 70 | <0.1% | – | – |
| 46 | [Spacelift](https://www.runsonwhat.com/reverse/spacelift) | 65 | <0.1% | +1 | – |
| 47 | [TIBCO Mashery](https://www.runsonwhat.com/reverse/mashery) | 59 | <0.1% | – | – |
| 48 | [Centercode](https://www.runsonwhat.com/reverse/centercode) | 50 | <0.1% | +10 | – |
| 49 | [Axway Amplify](https://www.runsonwhat.com/reverse/axway-amplify) | 47 | <0.1% | +15 | – |
| 50 | [CloudBees](https://www.runsonwhat.com/reverse/cloudbees) | 28 | <0.1% | – | – |
| 51 | [Applause](https://www.runsonwhat.com/reverse/applause) | 24 | <0.1% | −1 | – |
| 52 | [Gitpod](https://www.runsonwhat.com/reverse/gitpod) | 19 | <0.1% | – | – |
| 53 | [Jenkins](https://www.runsonwhat.com/reverse/jenkins) | 13 | <0.1% | – | – |
| 54 | [Devin](https://www.runsonwhat.com/reverse/devin) | 5 | <0.1% | – | – |
| 55 | [n8n](https://www.runsonwhat.com/reverse/n8n) | 5 | <0.1% | – | – |
| 56 | [QA Wolf](https://www.runsonwhat.com/reverse/qawolf) | 5 | <0.1% | – | – |
| 57 | [Pierre](https://www.runsonwhat.com/reverse/pierre) | 1 | <0.1% | – | – |

Share is each tool's part of all 106,233 matches in this category; a company using two tools counts for both.

## How to compare developer tools

- Seat pricing versus usage pricing, especially for AI tools.
- Security review: code access, data retention and self-hosting options.
- Fit with your existing editor, repository and CI.

## How runsonwhat finds developer tools

Developer tools show up in domain-verification TXT records, in internal hostnames from certificate logs and on subprocessor lists.

## FAQ

### What are the most popular developer tools?

As of October 2026, the most popular developer tools by number of companies using them are Atlassian (64,640 companies), Cursor (6,089 companies) and TeamViewer (4,369 companies), according to runsonwhat. Atlassian alone accounts for 61% of the 106,233 Dev Tools matches runsonwhat has, and the top three together for 71%. 57 developer tools have at least one confirmed customer.

### Atlassian vs Cursor: which is more popular?

Atlassian is more popular: 64,640 companies show public evidence of Atlassian, against 6,089 for Cursor (11× as many), according to runsonwhat (October 2026). TeamViewer is third with 4,369.

### Which developer tools do small businesses use most?

Among companies with up to 50 employees, the most used developer tools are Atlassian (18,036 companies), HubSpot App Developer (1,310 companies) and Cursor (1,188 companies), according to runsonwhat (October 2026). The counts cover companies with a known headcount; see each tool's page for the full size breakdown.

### Which developer tools do large companies use most?

Among companies with more than 1,000 employees, the most used developer tools are Atlassian (7,232 companies), TeamViewer (1,261 companies) and Docker (957 companies), according to runsonwhat (October 2026). Large companies often run more than one tool in a category, so the same company can count for several.

### Which developer tools are most popular in the United States?

In the United States, the most used developer tools are Atlassian (19,196 companies), Cursor (2,604 companies) and Docker (1,338 companies), based on companies runsonwhat has located there (October 2026). Atlassian has 53% of the Dev Tools matches among companies based in the United States.

### Which developer tools are most popular in the United Kingdom?

In the United Kingdom, the most used developer tools are Atlassian (4,493 companies), Cursor (328 companies) and TeamViewer (290 companies), based on companies runsonwhat has located there (October 2026). Atlassian has 63% of the Dev Tools matches among companies based in the United Kingdom.

### Which developer tools do software companies use?

Software is the industry with the most Dev Tools matches, and its companies use Atlassian (7,577 companies), Cursor (1,122 companies) and HubSpot App Developer (620 companies) most, according to runsonwhat (October 2026). Each tool's page breaks its customers down by industry, so you can check where a tool over-indexes.

### Which developer tools are companies adopting right now?

In the 30 days to October 2026, the most new adoptions runsonwhat recorded were for Atlassian (183 companies), Cisco Intersight (139 companies) and Citrix (81 companies). A start is counted when a recheck finds a tool that the previous check of the same company, done the same way, did not.

### What is Atlassian's market share among developer tools?

Atlassian has 61% of the Dev Tools matches runsonwhat has found (64,640 companies of 106,233), as of October 2026; Cursor has 5.7%. This is share of companies with public evidence of each tool, not share of revenue or seats, and a company that runs two tools counts for both.

### How does runsonwhat rank developer tools?

runsonwhat counts the companies where a public record shows each tool in use and ranks by that count. Developer tools show up in domain-verification TXT records, in internal hostnames from certificate logs and on subprocessor lists. A company counts only when a direct record backs it up. The full method is at https://www.runsonwhat.com/methodology.

## Related categories

- [Email Delivery](https://www.runsonwhat.com/tools/email-delivery.md)
- [Workspace](https://www.runsonwhat.com/tools/email-workspace.md)
- [Collaboration](https://www.runsonwhat.com/tools/collaboration.md)
- [People & HR](https://www.runsonwhat.com/tools/hr-recruiting.md)
- [Finance & Legal](https://www.runsonwhat.com/tools/finance-legal.md)
- [Security & Compliance](https://www.runsonwhat.com/tools/security-compliance.md)

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Source: runsonwhat, https://www.runsonwhat.com/tools/developer-tools (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.