Berkeley DB (libdb) is a programmatic toolkit that provides embedded database support for both traditional and client/server applications. It includes b+tree, queue, extended linear hashing, fixed, and variable-length record access methods, transactions, locking, logging, shared memory caching, database recovery, and replication for highly available systems. DB supports C, C++, C#, Java, PHP, and Perl APIs. It supports key-value pair (NoSQL), SQL, and Java Object formatted data. It is available for a wide variety of Unix platforms as well as QNX, Android, Mac OS X, and several varieties of Windows.
Bugzilla is the leading open-source/free software bug tracking system, with high-profile installations at mozilla.org, GNOME, Red Hat, and NASA, among others. It features a comprehensive set of fields, attachment management, inter-bug dependencies, email notification of changes, a powerful query interface, reporting, and Web, XML, email, and console interfaces. It can be managed entirely using a Web-based UI. The user UI is customizable using templates.
The DataBrowser is a Java-based tool for browsing virtually any database. It has been tested with Oracle, SQL Server, PostgreSQL/Postgres, MySQL, DB2, and MS Access (among some others). It requires a Java 2 runtime environment. The DataBrowser allows you to execute dynamic SQL, import and export data, view the schema in a treeview, and view query results in a table view. It also logs all SQL executed with the SQLLog feature.
db4o is an object database for Java and all .NET environments. Its features include ACID transactions, automatic class schema recognition, query-by-example, a S.O.D.A. object querying API, native queries, LINQ support on .NET, callback methods, memory files, cascade-on-delete, multi-threaded access, and Java Webstart and servlet support.
GRASS (the Geographic Resources Analysis Support System) is a software raster- and vector-based GIS (Geographic Information System), image processing system, graphics production system, and spatial modeling system. It contains many modules for raster data manipulation, vector data manipulation, rendering images on the monitor or paper, multispectral image geocoding and processing, point data management and general data management. It also has tools for interfacing with digitizers, scanners, and the PostgreSQL, DBF, and ODBC connected databases. GRASS operates on all common operating systems.
iSQL(IndependentSQL)-Viewer is a JDBC 2.0-compliant application that can take advantage of platform features such as transactions, running batch modes, and database abstraction. Even in heterogeneous database environments, it supports all database platforms with a JDBC 2.0-compliant driver, such as PostgreSQL, MySQL, and Oracle. It provides a variety of tools to carry out both simple and complex database activities.
JSX serializes Java objects to XML. You can persist objects, evolve them, and send them over the network and between applications. Your object data becomes human-readable and human-writable. You can test it, search it, profile it, audit it, and edit it with ordinary text and XML tools. JSX handles all POJOs and also all classes that require Java's own object serialization. JSX also correctly and completely handles the content of Serializable classes - including when they evolve and add additional content, for both upgrading to a new version (e.g. of Java or third-party libraries) and downgrading to an older one. It does this by reusing a class's Serialization methods, which are maintained by the class's developer to handle its evolution.
Midgard is a persistent storage framework. It provides an object-oriented and replicated environment for building data-intensive applications. It ships with a MidCOM content management system built on the Midgard framework. MidCOM's features include Web-based authoring WYSIWYG interfaces and a component interface for installing additional Web functionality. Midgard is built on the GNOME stack of libraries like GLib and libgda, and has language bindings for C, Python, and PHP. Communications between applications written in the different languages happen over D-Bus. The CMS runs on the LAMP (Linux, Apache, MySQL and PHP) platform.
Mimer SQL is an SQL-based, high-performance RDBMS, targeted at mission-critical client/server environments. It offers scalable performance (including multi-processor support), and is available in all major Unix (including Linux), Windows, and OpenVMS platforms. It offers Optimistic Concurrency Control as the transaction handling method, instead of the more commonly used locking-type.