Groonga is a fast and accurate full text search engine based on an inverted index. Newly registered document instantly appears in search results, and updates are allowed without read locks. These characteristics result in superior performance for real-time applications. It is also a column-oriented database management system (DBMS). Compared with well-known row-oriented systems, such as MySQL and PostgreSQL, column-oriented systems are more suited for aggregate queries.
Database Deployment Manager (DDM) is a desktop oriented multi-platform database design tool that allows database administrators and programmers to create database structures (using an object oriented methodology) and deploy them into an existing database. The tool allows creation of diagrams to identify basic relations between the defined structures. You can import tables from various databases, either by fully reversing a database or just picking tables from various databases and injecting them into your solution. You can browse the databases and execute SQL queries on them. There is a unique SELECT query builder that makes the building of queries very easy without having to write a single SQL statement; just using point and click with the mouse.
SMDB is a small, portable database library that exports an API similar that of GDBM and allows for the simple storage and retrieval of key/data couples. The library is totally system independent due to the use of externally supplied interface pointers. File locking is left to the caller, allowing single instance users to not pay the the price (in terms of performance and portability) of the locking framework. It supports transactions, multiple tables inside the same DB file, and is less than half the size of GDBM.
lib4d_sql is a C library that provides the required functions (connect, prepare, execute, etc.) for writing an SQL client for 4D databases. It uses the public 4D SQL protocol, which is supported by 4D products since version 11. It is already used by the PDO_4D Open Source project, and it might be used to provide others drivers for JDBC, ADO, or ActiveRecord.
The Feature Data Objects API provides a generic, command-based interface to a number of back-end data source technologies for storing, retrieving, updating, and analyzing GIS (Geographic Information System) data. A provider is a specific back-end implementation of the FDO API that provides access to data stored in a particular data source technology.
Reptool is a reporting/printing tool. It is made up of two components: libreptool, which manages source files that are the report's definition, and produces the report/printout; and greptool, which visually creates source files. It is based on glib, libxml, GTK+, cairo, pango, and libgda.
Bugzproxy is a C# client library for the upcoming Bugzilla Bugtracker WebService interface (part of Bugzilla 3.0). It provides an OO access to a Bugzilla server. The aim of Bugzproxy is to allow easy building of various clients that facilitate the integration of Bugzilla into the various C# tool chains. As the project's aim is to provide an efficient and intuitive OO API, the API probably will change in future revisions.