| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 0 | 1 |
| Spec score · Property-Based Testing Tools | 7.6 (#12) | 6.9 (#24) |
| Generators | Its documented generators cover scalar values, collections, composite values, and domain-based values such as names and dates. | It includes built-in generators and combinators for creating generators, including compound and recursive generators. |
| License | The repository identifies the project as MIT licensed. | The project is distributed under the Eclipse Public License, the same license as Clojure. |
| Purpose | Eris brings QuickCheck-style property-based testing to PHP and PHPUnit. | test.check is a Clojure property-based testing tool inspired by QuickCheck. |