CnosDB vs UnitDB
CnosDB
cnosdb.comUnitDB
github.comSide by side
| Figure | CnosDB | UnitDB |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 0 |
| Spec score · Time-Series Databases | 8.5 (#6) | 6.9 (#34) |
| Integrations | The ecosystem integration page lists LangChain, Grafana, Jaeger, Kafka, Prometheus, Telegraf, TensorFlow, and Vector. | The maker lists supported Go and Flutter/Dart client libraries for connecting to a UnitDB server. |
| License | The official site says the standalone, distributed, and ecosystem tools use the AGPL-3.0 open-source license. | The repository states that UnitDB is licensed under Apache-2.0. |
| Product | CnosDB is an open-source distributed time-series database designed for high performance, compression, and ease of use. | UnitDB is an open-source time-series database and publish-subscribe messaging server aimed at IoT and real-time connected devices. |
| Querying | CnosDB supports standard SQL and time-based aggregation queries. | Its UQL query language supports topic patterns, JSON payload field selection and filtering, grouping, counts, indexes, and deletion by ID or age. |
Plans
In their own words
CnosDB
CnosDB is an open-source distributed time-series database for workloads such as IoT, industrial internet, connected vehicles, and IT operations. It supports standard SQL, time-based aggregation, and a DataFrame API. Data can be written without a predefined schema, including out of order, and historical data can be replenished. Ingestion methods include SQL, Line Protocol, OpenTSDB, Elasticsearch bulk, Loki, NDJSON, and OpenTelemetry. Deployment options include standalone, distributed, and storage-compute separated modes, on public, private, or hybrid clouds. The documentation describes horizontal scaling for storage and stateless compute nodes. Integrations include Grafana, Prometheus, Telegraf, JDBC, and a Python SDK; the open-source Python connector provides a PEP 249 interface for SQLAlchemy and pandas. Import and export formats include PARQUET, CSV, and JSON with AWS S3, Google Cloud Storage, and Azure Blob Storage. CnosDB documents retention policies, multi-tenancy, and role-based permissions, as well as optional TLS certificate and private-key settings. Community Edition is free under AGPL-3.0.