effmass vs PhysSandbox
| effmass | PhysSandbox | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | Web |
| Free plan | Yes | Yes |
| Delivery mode | — | web |
| Lesson library | — | Yes |
| Assessment tools | — | Yes |
Both are listed in Best Physics Simulation Software. On Freedom251, PhysSandbox scores higher on our published basis.