Petal vs refbase
| Petal | refbase | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | $2.55/mo | — |
| Open source | No | No |
| Platforms | extension, Web | Web |
| Free plan | Yes | — |
| Paid from | 4.99 /user/mo | — |
| PDF annotation | Yes | — |
| Citation plugins | — | Yes |
| Supported platforms | — | web |
| Team collaboration | — | advanced |
Both are listed in Best Reference Management Software. On Inferse, Petal scores higher on our published basis.