PropEr vs Rantly
| PropEr | Rantly | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | self-hosted | — |
| Free plan | Yes | Yes |
| Supported languages | Erlang | Ruby |
| Test runner support | EUnit, Common Test | Test::Unit, Minitest, RSpec |
| Failing-case shrinking | Yes | Yes |
| Stateful testing | Yes | — |
Both are listed in Best Property-Based Testing Tools. On The Geeks Club, PropEr scores higher on our published basis.