Apache IoTDB vs DolphinDB
| Apache IoTDB | DolphinDB | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | api, Linux, self-hosted, Web, Windows | api, extension, Linux, self-hosted, Web, Windows |
| Deployment | both | both |
| SQL support | Yes | Yes |
| Retention policies | Yes | Yes |
| Horizontal scaling | Yes | Yes |
| Query languages | IoTDB-SQL; Tree Mode SQL; Table Mode SQL | DolphinDB SQL; ANSI SQL/SQL-92; DolphinDB scripting language |
| Ingestion methods | INSERT SQL; Java JDBC; Java, C++, Python, and Go native APIs; REST API; MQTT; CSV; TsFile | Text, binary, JSON, HDF5, Parquet, Arrow, ODBC, APIs, Kafka, MQTT, ZeroMQ, MySQL, MongoDB, HBase, kdb+ |
| Free plan | — | Yes |
Both are listed in Best Time-Series Databases. On Freedom251, Apache IoTDB scores higher on our published basis.