| Price from | $15/mo | $5/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 3 | 5 |
| Spec score · Online Whiteboard Tools | 8.8 (#12) | 9.0 (#9) |
| Spec score · Online whiteboards | 8.0 (#29) | 9.2 (#7) |
| Headquarters | London, England, United Kingdom | San Mateo, California, United States |
| Product | BitPaper is a collaborative online whiteboard with a permanent, private URL for sharing papers and making video calls. | Limnu is an online whiteboard for sketching, sharing, brainstorming, and real-time collaboration. |
| Real-time collaboration | Users can write, chat, make audio and video calls, and share their screens in real time. | Users can draw together on shared boards and invite collaborators by email or link. |
| Support | BitPaper's help menu provides access to its manual and Support contact. | Limnu offers email support at [email protected] and a support form. |
