Abstrackr vs Litstream
| Abstrackr | Litstream | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Web | Web |
| Free plan | Yes | — |
| Reference deduplication | — | Yes |
| Data extraction | — | Yes |
| Protocol support | — | Yes |
| Review types | — | systematic review |
Both are listed in Best Systematic Review Software. On Freedom251, Abstrackr scores higher on our published basis.