Heurio vs Marker.io
| Heurio | Marker.io | |
|---|---|---|
| Free plan | No | No |
| Free trial | Yes | Yes |
| Paid from | $19/mo | $39/mo |
| Open source | No | No |
| Platforms | extension, Web | extension, Web |
| Free plan | No | No |
| Paid from | 19 /user/mo | — |
| Annotation modes | comments | — |
| Collaborative review | Yes | — |
| Guest access | Yes | — |
| Document support | webpages | — |
| Browser capture | Yes | — |
| Team seats | 10 seats | — |
| Export options | PDF, CSV | — |
Both are listed in Best Web Annotation Tools. On Samsung Mobile US Press, Marker.io scores higher on our published basis.