| Price from | $79/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 19 | 1 |
| Spec score · Design Proofing Software | 8.7 (#3) | 7.2 (#28) |
| Annotations | Reviewers can pin comments to content and annotate directly on the work. | Users can add notes to project screens to describe design elements and explain how they should work. |
| Intended users | The maker describes Pro as suited to individuals getting started, Business to teams needing control, and Enterprise to large organizations. | The product page describes sharing specifications with developers, designers, project managers, and clients. |
| Product | MarkUp lets collaborators upload content, leave contextual comments, and share it for review. | Specfox is a SaaS platform for creating specification documents. |
| Security | Enterprise includes SOC II documentation, SSO (SAML), and a custom DPA. | The privacy policy says data exchanges between the site and users use an SSL-secured communication channel and are encrypted. |