Open Source ChromeOS Database Engines/Servers

Firebird RDBMS offers ANSI SQL features & runs on Linux, Windows & several Unix platforms. Features excellent concurrency & performance & powerful stored procedure & trigger language. More information and downloads at https://firebirdsql.org/, issue tracker is https://github.com/FirebirdSQL/firebird/issues

HSQLDB is a relational database engine written in Java, with a JDBC driver, conforming to ANSI SQL:2023. A small, fast, multithreaded engine and server with memory and disk tables, LOBs, transaction isolation, multiversion concurrency and ACID.

CLucene is a C++ port of Lucene: the high-performance, full-featured text search engine written in Java. CLucene is faster than lucene as it is written in C++.

i-doit is a web based IT documentation and CMDB. i-doit documents IT-systems and their changes, defines emergency plans, displays vital information and helps to ensure a stable and efficient IT operation: The technical documentation: This means that all information can be organised (details flexibly adjusted), stored and maintained in one place. This allows simple Helpdesk, Support and Planning functions and provides the basis for quality assurance and certification. i-doit allows services to be documented as a logical grouping of objects placed in relation to each other. This provides the basis for (ITIL) processes such as Change and Problem Management, helps to control and manage the SLA (Service Level Agreement) or the communication with users. Its interfaces to other ITSM applications (like Nagios, Request Tracker etc.) allow the entering of data only once in the ITSM environment. i-doit maintains one holistic view of the operational situation.

The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources that support research and development of information retrieval and text mining software, including the Indri search engine in C++, the Galago search engine research framework in Java, the RankLib learning to rank library, ClueWeb09 and ClueWeb12 datasets and the Sifaka data mining application.

Virtuoso is a scalable cross-platform server that combines Relational, Graph, and Document Data Management with Web Application Server and Web Services Platform functionality.

The Datalog Educational System (DES) is a deductive database with Datalog, SQL, Relational Algebra, Tuple Relational Calculus and Domain Relational Calculus as query languages developed mainly for education. It can be used from most common Prolog interpreters over any supported OS and from portable executables (Windows, Linux and MacOS).

db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)

Rel is a DBMS primarily intended for educational purposes, but also suitable as a desktop DBMS or lightweight server, that implements Date and Darwen's "Tutorial D" true relational database language. Source code is available at https://github.com/DaveVoorhis/Rel

The BSBM (Berlin SPARQL Benchmark) suite for benchmarking RDF stores or RDB-2-RDF wrappers over the SPARQL protocol. Pure RDBMS benchmarking via SQL is also possible. Visit http://www4.wiwiss.fu-berlin.de/bizer/BerlinSPARQLBenchmark for more details.

Debby has replaced CDE in the Tina4Stack, you may want to check it out at http://tina4.com CDE is a PHP class which implements the general database functions in PHP and provides a common SQL platform for php development where developers change their databases but not their code. Supports Firebird, MySQL,Oracle,SQLite, MSSQL(both drivers),CUBRID,ODBC. CDE now supports date uniformity, param passing & BLOB handling across all the databases supported. CDE is not a replacement for PDO, in fact we may implement PDO in CDE to standardize PDO results and calls. Some PDO drivers are still regarded as EXPERIMENTAL on PHP website, so use with caution. Feel free to suggest any features you wish to be added or submit a bug report with the tracker

eXist-db is a native XML database featuring efficient, index-based XQuery processing, extensions for keyword search, XUpdate support, XSLT support, XForms support, REST and tight integration with existing XML development tools. Moved to Github - https://www.github.com/exist-db/exist

The goal of PyTables is to enable the end user to efficiently and easily manipulate large datasets (both homogenous, i.e. arrays, and heterogenous, i.e. tables) on a persistent, hierarchical way.

olap4j is an open Java API for connecting to OLAP servers and writing analytic applications. Code is at https://github.com/olap4j/olap4j.

OpenEMed is a distributed healthcare and medical information framework based on open standards including those of HL7 and the healthcare taskforce of the OMG. These standards include identity management, observation access, access, and terminology.

SportWire is a website toolkit for high-speed high-volume collection, transformation and redistribution of documents. Sportwire is currently employed by xmlteam.com to translate multiple concurrent vendor news feeds into standard SportsML at over 20 documents per second.

Flat-file SQL (fSQL) is a set of classes available in PHP that allows users without SQL database servers to select and manipulate flat-file data using SQL queries. fSQL is designed to support as many SQL queries and features as it can.

A set of software components used to investigate and implement searching of music and audio. This covers content-based retrieval and meta-data based solutions, segmentation and content selection (summarisation) of audio and music (MIDI, MP3 and WAV).

The D2RQ API provides access to relational database content from within the Jena and Sesame RDF frameworks. D2R Server is a Semantic Web server and SPARQL endpoint based on D2RQ. Both use a declarative language for mapping database schemata to RDF.

A central database of all installable programs, descriptions, dependencies, source URLs, MD5 sums, and suggested menu listings and the software to read the database, usable by desktops and window managers to organize software and install any new software

SAADA transforms a set of heterogeneous astronomical data FITS files in a powerfull database deployed on the Web and including VO features. The database is located on your host and keeps under your full control. This job doesn't require to write cod

In the Oracle database there are two PL/SQL APIs to send mails: UTL_SMTP and UTL_MAIL. But there is no package which is able to retrieve messages from a mailbox on a server. The here provided package MAIL_CLIENT closes this gap.

That project aims at providing a framework for SOCI (http://soci.sourceforge.net), so as to ease the packaging and delivery processes, allowing to deliver packages for a great number of Linux distributions, as well as for other Unices and MS Windows.

Java CSV is a small fast open source Java library for reading and writing CSV and plain delimited text files. All kinds of CSV files can be handled, text qualified, Excel formatted, etc.