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.
e4Graph is a C++ library that allows programs to store graph-like data persistently and to access and manipulate that data efficiently. With e4Graph, you can arrange your data in the most natural form that reflects the relationships between its parts, rather than having to force it into a table-like format. The e4Graph library also allows you to concentrate on the relationships you want to represent, and not on how to store them in a database. You can modify data items, and add and remove connections and relationships between pieces of data on the fly. e4Graph allows you to represent an unlimited number of different connections between pieces of data, and your program can selectively manipulate the data according to the relationships it cares about, not having to know about other connections represented in the data set.
Moodss is a modular monitoring application, which supports operating systems (Linux, UNIX, Windows, etc.), databases (MySQL, Oracle, PostgreSQL, DB2, ODBC, etc.), networking (SNMP, Apache, etc.), and any device or process for which a module can be developed (in Tcl, Python, Perl, Java, and C). An intuitive GUI with full drag'n'drop support allows the construction of dashboards with graphs, pie charts, etc., while the thresholds functionality includes emails and user defined scripts. Monitored data can be archived in a SQL database by both the GUI and the companion daemon, so that complete history over time can be made available from Web pages or common spreadsheet software. It can even be used for future behavior prediction or capacity planning, from the included predictor tool, based on powerful statistical methods and artificial neural networks.
Qddb is powerful database creation software. Using Qddb, you can quickly and easily create database applications. nxqddb allows you to create a complete database application in less than five minutes, and Hx lets you manage database information over the web through a CGI interface. Larger applications can also be developed using Fx, a powerful TCL/Tk toolkit.
SQLite is a small, fast, embeddable SQL database engine that supports most of SQL92, including transactions with atomic commit and rollback, subqueries, compound queries, triggers, and views. A complete database is stored in a single cross-platform disk file. The native C/C++ API is simple and easy to use. Bindings for other languages are also available.
WordNet® is an on-line lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept. Different relations link the synonym sets.
Xdobry is a form-generator for relational databases. It is aimed at people who want to create forms to an existing database or migrate databases. MySQL, Postgresql, sqlite, ODBC (MS Access, MS SQL Server), and Oracle are supported. The system contains SchemaEditor, FormEditor (GUI Drag&Drop Editor), and FormServer. Xdobry offers functions to manipulate, import, and export database schema. Xdobry lets you browse your database like hypertext documents. Xdobry can migrate data between all supported databases.
pgMail is a small Tcl-based script that you can store within any PostgreSQL database. Once it is stored there, you can create any number of specialized procedures to send email from directly within PostgreSQL. For example, you can email a customer when product ships. It is particularily helpful in a heterogeneous systems environment, or when many different kinds of applications may modify one database.