HSQLDB vs SingleStore Helios
HSQLDB
hsqldb.orgSingleStore Helios
singlestore.comSide by side
| Figure | HSQLDB | SingleStore Helios |
|---|---|---|
| Price from | $8.33/mo | $0.99/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 11 | 6 |
| Spec score · Sql Databases | 9.2 (#1) | 8.7 (#3) |
| Spec score · Database Software | 8.9 (#13) | 9.3 (#3) |
| Documentation depth | The project publishes HTML, PDF and text guides, JavaDoc for public classes, utilities documentation, examples, tests and SQL scripts. | The cloud documentation includes getting-started, connection, database, loading, querying, AI, security, reference, release-notes and support sections. |
| Founded | 2001 | 2011 |
| Free plan | Yes | Yes |
| Integrations | The project documents JDBC and ODBC connectivity and integration with OpenOffice.org and LibreOffice. | Listed integrations include AWS Glue, Apache Beam, Apache Flink, Apache Spark, Azure Data Factory, Azure Event Hubs, Confluent Kafka, Fivetran, Informatica, Qlik, Tableau Prep, dbt, Datadog, New Relic and Terraform. |
| Product | HSQLDB is a Java-based relational database engine with in-memory and disk-based tables, supporting embedded and server modes. | SingleStore Helios is a cloud database-as-a-service available on leading public clouds. |
| Rating on Capterra | 4.3 out of 5 from 3 reviews. | 4.5 out of 5 from 39 reviews. |
| Rating on G2 | 4.0 out of 5 from 22 reviews. | 4.5 out of 5 from 118 reviews. |
| Support | Support options include a help forum, a user mailing list, bug and feature request trackers, paid SupportWare, and professional commercial support. | Paid Helios subscriptions include Standard support, with Silver and Platinum tiers offering faster response targets and expanded coverage. |
| What it does | HSQLDB (HyperSQL) is a Java relational database engine supporting transactional in-memory and disk tables in embedded or server deployments. | SingleStore Helios is a managed distributed SQL database combining transactional, analytical, JSON, full-text, vector, time-series and geospatial workloads. |
Plans
HSQLDB
- Developer subscription$100 a year
- Basic Corporate subscriptionPrice not published
- Premier Corporate subscription$2,500 a year
- HSQLDBFree
- HSQLDB softwareFree
- Developer SupportWare$100 a year
- SupportWare Developer subscription$100 a year
- Basic Corporate SupportWare$500 a year
- SupportWare Basic Corporate subscription$500 a year
- Premier Corporate SupportWare$2,500 a year
SingleStore Helios
- SharedFree
- Standard$0.99 a month
- Enterprise$1.49 a month
- StandardPriced on request
- EnterprisePriced on request
- BYOC StandardPriced on request
In their own words
HSQLDB
HSQLDB is a Java-based relational database engine for embedded or server use, with both in-memory and disk-based tables. It supports SQL:2023 core features and many optional features, plus lock-based and MVCC transaction models; the engine is fully multithreaded. Listed capabilities include JSON constructor functions, CSV loading and unloading, temporal system-versioned tables, row-level access control, and log-based replica synchronization. It includes a command-line SQL tool and simple GUI query tools. The latest official release listed is version 2.7.4, compatible with JDK 8 and above, and packages include Java 11 module jars as well as Java 8 jars for HSQLDB and SQL Tool. HSQLDB is self-hosted, with high availability, read replicas, and JSON data support listed. Its default combined limit for CACHED tables is 8TB, extendable to 256TB with a connection property; each TEXT table is limited to 256GB, and memory tables depend on available memory. The software is free to use in commercial products when license terms are met; its licenses are based on the new BSD License. The HSQLDB plan is free. A Developer subscription is $100 a year; Premier Corporate is $2,500 a year at the base level. Support options include community channels and paid commercial support.
SingleStore Helios
SingleStore Helios is a cloud database service available on AWS, Google Cloud, and Microsoft Azure. It handles transactional and analytical workloads in one database, with storage and compute scaled independently. Its data capabilities include relational records, JSON/BSON documents, vector and full-text search, time-series, geospatial, and key-value data. SingleStore Pipelines can ingest from sources such as Kafka, Amazon S3, and HDFS. For AI workloads, the service includes Jupyter notebooks, data integration services, and a compute service. Listed integrations include Datadog, Terraform, Apache Spark, AWS Glue, Azure Data Factory, dbt, and Fivetran. Helios is available through web and API platforms. The free Shared plan provides one workspace for evaluation, development, and non-production testing, with self-support. Standard is $0.99 a month for managed production workloads, with read replicas, database branching, 30-day monitoring, and support. Enterprise is $1.49 a month and adds online point-in-time recovery, Smart Disaster Recovery, audit logging, and customer-managed encryption keys. The listed availability commitments vary by configuration, reaching 99.99% across two availability zones on paid plans.