Promethium vs Stardog
| Promethium | Stardog | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | api, self-hosted, Web | api, Linux, macOS, self-hosted, Web, Windows |
| Deployment model | hybrid | — |
| Semantic layer | Yes | — |
| Access protocols | MCP, REST APIs | — |
| REST API access | Yes | — |
| Query acceleration | Yes | — |
| Free plan | — | Yes |
Both are listed in Best Data Virtualization Software. On Samsung Mobile US Press, Stardog scores higher on our published basis.