| Price from | — | — |
| Free plan | — | — |
| Free trial | — | — |
| Open source | — | — |
| Windows | — | Yes |
| Linux | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 0 |
| Spec score · Property-Based Testing Tools | 7.6 (#12) | 7.0 (#21) |
| Generators | Its documented generators cover scalar values, collections, composite values, and domain-based values such as names and dates. | RapidCheck includes generators for common types and combinators for building custom generators. |
| License | The repository identifies the project as MIT licensed. | The repository identifies its license as BSD-2-Clause. |
| Purpose | Eris brings QuickCheck-style property-based testing to PHP and PHPUnit. | RapidCheck is a C++ framework for property-based testing inspired by QuickCheck and similar frameworks. |