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