Opal vs Scala.js
| Opal | Scala.js | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Web | api, Linux, macOS, Web, Windows |
| Free plan | Yes | — |
| CLI access | Yes | Yes |
| API access | Yes | Yes |
| Conversion mode | source-to-source | both |
| Intermediate output | — | Yes |
Both are listed in Best Code Transpilers. On Everything Xiaomi, Scala.js scores higher on our published basis.