# Software engineering: the tools companies use

720 companies on usedby use a tool of its 4 categories with a public customer. Each category ranks its own tools: tools of different jobs are not ranked against each other. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-14: 846 of 885 public lines checked.

> AI that helps teams write, review, test, ship and run software, and builders that turn a prompt into an app.

## Categories

- [AI coding assistants & agents](https://www.usedby.ai/tools/category/ai-code-assistants.md): 247 companies, 11 tools with a public customer; most used: Cursor
- [Code review & testing](https://www.usedby.ai/tools/category/code-review-testing.md): 233 companies, 7 tools with a public customer; most used: Sonar
- [App builders & no-code](https://www.usedby.ai/tools/category/ai-app-builders.md): 211 companies, 6 tools with a public customer; most used: Retool
- [DevOps, SRE & incidents](https://www.usedby.ai/tools/category/devops-sre.md): 137 companies, 5 tools with a public customer; most used: incident.io

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Source: https://www.usedby.ai/tools/category/software-engineering · How we check: https://www.usedby.ai/methodology