Very large in-memory database: in our benchmark, eXtremeDB-64 scales beyond 1.17 TB & delivers 87.78 million transactions/second.

Free, on-demand Webinars! Topics include High Availability, key embedded database selection criteria, and more.

Get Perst, the open source, object-oriented embedded database for Java and .NET.

What's new in eXtremeDB embedded database version 4.0? Improved concurrency, KD-Tree support and more! Read about it.

New Embedded Systems Design article details eXtremeDB in-memory database's role in F5 Networks' BIG-IP application delivery device.

eXtremeDB-64 scales massively as Web cache for Tagged’s social networking application! Read the press release.

Perst Lite brings embedded database superpowers to Carbon Hero’s Java ME app. Learn more.

McObject alliance with G3Tek aims at Turkey’s fast-growing embedded technology sector. Get details...

McObject expands in China, adding a team in Beijing with deep experience in embedded database systems.

Printable Version

Perst Open Source Java Database / .NET Database Evaluation Software

Download an open source / evaluation copy of the Perst™ embedded database for Java or .NET. Complete documentation can be downloaded separately.

Contact us to learn about a commercial license for Perst.

 

Perst and Perst Lite for Java
Perst open source / dual license embedded database for Java.
The Perst for Java distribution is compatible with Google's Android platform, and also includes Perst Lite for Java ME.
Build 305. Updated September 23, 2008.

Change history:

1. Fix bug introduced by an earlier change to the caching policy in Perst Lite

Perst for .NET (C#) and .NET Compact Framework
Perst open source / dual license embedded database for .NET (C#) and .NET Compact Framework
Build 305. Updated September 23, 2008
Change history:
1. Fix bug introduced by earlier change in object caching policy in Perst Lite.
2. Add support for Mono (open source .Net platform for *nixes.

Perst Data Sheet

Perst ProScout demo
ProScout is a sample Java ME midlet, based on Perst Lite, that helps a sports recruiter manage information on a mobile device. ProScout has been tested in the PhoneME, Nokia S40 and S60, and Blackberry environments. Includes Getting Started file and commented source code.

Asynchronous version of the Perst implementation of PolePosition

ACID version of the Perst implementation of PolePosition

TestIndex
TestIndex is an Android-ready database benchmark application, with complete source code, that measures performance using Perst on Android, and Android’s bundled SQLite database system, performing the same tasks. Download TestIndex.