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eXtremeDB

mcobject.com

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Spec score 8.0 #10 of 30 in Embedded Databases

What it is

eXtremeDB is an in-memory database system designed for embedded devices and applications. It can combine in-memory and persistent storage within one database system. Interfaces include native APIs, REST, SQL, ODBC, and JDBC, with language APIs for C/C++, Java, Python, C#, Go, and Rust. For time-series data, a sequence type provides columnar storage. Distributed options include High Availability, Cluster, and Active Replication Fabric for replication across IoT tiers. Network communications can use TLS/SSL with OpenSSL or wolfSSL. Technical specifications list maximum database sizes of 4 GB on 32-bit architectures and 18.4 exabytes on 64-bit architectures. eXtremeDB supports Android, iOS, Linux, macOS, and Windows, and can be self-hosted. Evaluation downloads are listed for Linux, macOS, and Windows; custom trial packages can be requested for other platforms. McObject offers annual engineering support contracts that include software updates and a 50 percent discount on major upgrades. Commercial licensing is paid, with pricing available on request, and a 60-day trial is listed.

Spec sheet

Purpose
eXtremeDB is an in-memory database system designed for embedded devices and applications.Read 29 Sep 2026 · mcobject.com
Intended users
McObject describes eXtremeDB for HPC as intended for capital markets and other high-performance computing applications.Read 29 Sep 2026 · mcobject.com
Security
Network communications can use TLS/SSL, with support for OpenSSL and wolfSSL implementations.Read 29 Sep 2026 · mcobject.com
Support
Product support is available from McObject’s engineering team on an annual contract and includes software updates and a 50 percent discount on major upgrades.Read 29 Sep 2026 · mcobject.com
Headquarters
Federal Way, Washington, USARead 28 Sep 2026 · mcobject.com
Founded
2001Read 28 Sep 2026 · mcobject.com
APIs
The product provides native APIs, REST, SQL, ODBC and JDBC interfaces, with listed APIs for languages including C/C++, Java, Python, C#, Go and Rust.Read 29 Sep 2026 · mcobject.com
Company history
McObject says it was founded in 2001 alongside the introduction of eXtremeDB.Read 29 Sep 2026 · mcobject.com
Database limits
The technical specifications list maximum database sizes of 4 GB on 32-bit and 18.4 exabytes on 64-bit architectures.Read 29 Sep 2026 · mcobject.com
Distributed options
Its distributed options include High Availability, Cluster and Active Replication Fabric for replication across IoT tiers.Read 29 Sep 2026 · mcobject.com
Storage
It supports hybrid in-memory and persistent storage in a single database system.Read 29 Sep 2026 · mcobject.com
Time series
A sequence data type provides columnar storage for time-series data.Read 29 Sep 2026 · mcobject.com
Trial platforms
The evaluation page lists Linux, macOS and Windows downloads and says custom trial packages can be requested for other platforms.Read 29 Sep 2026 · mcobject.com

Plans and prices

eXtremeDB commercial license Priced on request Contact McObject for licensing options. License options are discussed with McObject Read 29 Sep 2026 · mcobject.com

Every eXtremeDB plan and price →

Strong points and limits

Strong points

  • Combines in-memory and persistent storage
  • Provides SQL, REST, ODBC, and JDBC interfaces
  • Includes columnar time-series storage
  • Offers distributed replication options
  • Lists a 60-day trial

Limits

  • No free plan is listed
  • Commercial license pricing requires contacting McObject
  • 32-bit maximum database size is 4 GB

Who it suits

eXtremeDB is for developers working with embedded devices and applications who need in-memory, persistent, or hybrid storage. McObject also describes its HPC offering for capital markets and other high-performance computing applications.

Verdict

eXtremeDB offers multiple storage models, interfaces, and distributed options for embedded and high-performance workloads. Buyers should confirm licensing terms and platform-specific trial availability with McObject.

Where Specifiction places it

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