Apophenia is an open statistical library. It provides functions on the same level as those of the typical stats package (such as OLS, probit, or singular value decomposition) but doesn't tie the user to an ad hoc language or environment. The core functions are written in C, but a Python interface is included. It supports SQLite and MySQL databases, exponentially expanding the upper limit to manageable data sets. Since the library is significantly faster than most stats packages, computationally-intensive procedures like maximum likelihood estimation and Monte Carlo routines are easy to implement.
Dynamo is a PHP library that executes complex MySQL queries and automatically generates HTML code. For example, it can draw a spreadsheet-like table from a simple query such as "SELECT last, first, phone FROM users". It can generate horizontal tables, vertical tables, multi-column tables from a single column result, and it even generates simple HTML forms based on a select query. For example, "SELECT firstName, lastName FROM cust WHERE id = 1234" automatically creates an HTML form that contains fields for firstName and LastName.
SQLiteDBMS is a database management server for SQLite. It allows an sqlite3 process to be accessed via a TCP/IP network. It provides Extended SQL, SSL, basic authentication, query caching, WebDAV, access control, and replication. It includes a simple Web server that takes HTTP requests and sends XML responses.
HDB is a small, flexible, and efficient hybrid database, a mix between a filesystem and a database. It comes with a wide range of command line utilities for manipulating and extracting data. It's designed for both embedded and bigger systems. It currently has interfaces to C, C++, Java, and Perl.
The OpenDBX libraries provide a unified and consistent API for software developers to different database management systems. The C and C++ libraries aim to implement access to the native database interfaces efficiently via a thin abstraction layer. They consist of a basic set of functions that are part of all vendor database libraries and can be extended by additional function blocks. Currently, Firebird/Interbase, MS SQL Server, MySQL, ODBC, Oracle, PostgreSQL, SQLite 2 and 3, and Sybase ASE are supported.
Mr. Persister aims at providing a simple yet complete relational persistence API. Current features include easier JDBC operations via JDBC templates (Spring style), automatic connection/transaction handling, object relational mapping, dynamic report support, connection pooling, and more. Planned features include replication, JDBC driver debugging, more advanced ORM, and more.