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.
PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension.
Ora2Pg is a Perl module to export an Oracle database schema to a PostgreSQL compatible schema. It connects your Oracle database, extracts its structure, and generates an SQL script that you can load into your PostgreSQL database. It dumps the database schema (tables, views, sequences, indexes, grants) with primary, unique, and foreign keys into PostgreSQL syntax without editing the SQL code generated. It also dump Oracle data into PostgreSQL DB as online process or into a file. You can choose what columns can be exported for each table.
Tellico is a collection manager for KDE. It includes default collections for books, bibliographies, comic books, videos, music, video games, coins, stamps, trading cards, and wines, and also allows custom collections. Unlimited user-defined fields are allowed. Filters are available to limit the visible entries by definable criteria. Full customization for printing is possible through editing the default XSLT file. It can import CSV, Bibtex, Bibtexml, RIS, MODS, CDDB, and audio file metadata and exports CSV, HTML, Bibtex, Bibtexml, ONIX, and PilotDB. Entries may be imported directly from Amazon.com, imdb.com, any z39.50 bibliographic server, PubMed, or an external script.
Poweradmin is a friendly Web-based DNS administration tool for Bert Hubert's PowerDNS server. The interface has full support for most of the features of PowerDNS including all zone types (master, native, and slave), supermasters for automatic provisioning of slave zones, full support for IPv6, and support for multiple languages.
hamsterdb Embedded Storage is an embedded database engine written in ANSI-C. It includes B+Trees with variable length keys and records. It supports in-memory databases and endian-independent files, database cursors, multiple databases in one file, "record number" databases, and duplicate keys. hamsterdb is very fast and highly configurable. It compiles and runs on Unix platforms, Linux, Microsoft Windows, and Windows CE.
SQL Power Architect is a data modeling tool with additional features geared specifically for data warehouse and data mart design. It allows the designer to open multiple concurrent source database connections, create and explore profiles of the source data, discover differences between two schemas (even if they're on different database platforms), drag and drop source schemas, tables, and columns into the data modeling playpen, and forward engineer the resultant target database and its associated ETL template.