DataLens vs NLSQL
DataLens
bran9910.github.ioNLSQL
nlsql.comSide by side
| Figure | DataLens | NLSQL |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 1 |
| Spec score · AI Data Analysis Tools | 7.4 (#20) | 8.2 (#6) |
| Deployment | The GitHub README says the app can be opened in a browser or run locally from its HTML file or an HTTP server. | The product deploys inside the customer's Azure subscription, and the site also says NLSQL is available through AWS Marketplace. |
Plans
In their own words
DataLens
DataLens reads CSV files in a browser, profiles their columns, and turns the analysis into an interactive report. It accepts drag-and-drop multi-file imports and clipboard pastes, and detects numeric, categorical, and datetime columns. Its eight chart types are bar, line, pie, donut, scatter, radar, histogram, and box plot. Pearson correlations appear in a heatmap; text insights can surface outliers, trends, top-k segments, and cross-correlations. Natural-language queries are supported, and an assistant can connect to Ollama, OpenRouter, Groq, or an OpenAI-compatible endpoint. The site says CSV data stays in the browser, while AI requests go from the browser tab to the configured provider. DataLens can run offline without installation or a backend, either in a browser or from a local HTML file or HTTP server. The maker describes CSV uploads up to approximately 50 MB. Reports export to PDF, and filtered data can be downloaded as CSV. The interface is available in French and English. DataLens is free and open source under the MIT License.