Compare
Up to three tools. The table shows the data as-is, without picking a “best”.
| Field | Ruff | Hurl | D2 |
|---|---|---|---|
| Platforms | Universal, GitHub | Universal | Universal |
| Local support | Yes | Yes | Yes |
| Paid API | No | No | No |
| License | MIT | Apache-2.0 | MPL-2.0 |
| Stars | 50435 | 19304 | 25793 |
| Last activity | November 5, 2026 | October 17, 2026 | October 11, 2026 |
| Install complexity | EASY | Easy; API and CLI knowledge required | Easy with a supported package manager; Homebrew must already be installed for this command. Official binaries, Windows, Linux, and source options are documented. |
| Category | Code Review, Testing | Testing, DevOps | Workflow, UI |
| Best use | Best for an individual Python developer or small team that wants consistent linting, import organization, and formatting locally, in editors, and in CI. It adds reviewable rules, safe-by-default fixes, and a pinnable version. It does not replace tests, type checking, or business-logic review, and migration from Black or Flake8 should be tested on a branch. | Best for a developer or small team that wants repeatable API checks with explicit conditions stored beside the code. It links request data and identifies failing assertions without repeating manual inspection. It does not replace browser tests or test-environment setup; curl may be enough for a one-off request. | For developers and small teams that want architecture and data-flow diagrams close to the repository and reviewable as text. Use it when relationships matter more than pixel-perfect placement; not for free-form marketing design or exact manual positioning. |