Open Source Java Database Engines/Servers

Browse free open source Java Database Engines/Servers and projects below. Use the toggles on the left to filter open source Java Database Engines/Servers by OS, license, language, programming language, and project status.

  • Auth for GenAI | Auth0 Icon
    Auth for GenAI | Auth0

    Enable AI agents to securely access tools, workflows, and data with fine-grained control and just a few lines of code.

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  • MongoDB 8.0 on Atlas | Run anywhere Icon
    MongoDB 8.0 on Atlas | Run anywhere

    Now available in even more cloud regions across AWS, Azure, and Google Cloud.

    MongoDB 8.0 brings enhanced performance and flexibility to Atlas—with expanded availability across 125+ regions globally. Build modern apps anywhere your users are, with the power of a modern database behind you.
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  • 1
    Firebird

    Firebird

    A powerful, cross platform, SQL database system

    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
    Leader badge
    Downloads: 2,955 This Week
    Last Update:
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  • 2
    HyperSQL Database Engine (HSQLDB)
    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.
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    Downloads: 518 This Week
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  • 3
    Mondrian is an OLAP (online analytical processing) engine written in Java. It reads from JDBC data sources, aggregates data in a memory cache, and implements the MDX language and the olap4j and XML/A APIs.
    Leader badge
    Downloads: 127 This Week
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  • 4
    Vespa

    Vespa

    The open big data serving engine

    Make AI-driven decisions using your data, in real-time. At any scale, with unbeatable performance. Vespa is a full-featured text search engine and supports both regular text search and fast approximate vector search (ANN). This makes it easy to create high-performing search applications at any scale, whether you want to use traditional techniques or a modern vector-based approach. You can even combine both approaches efficiently in the same query, something no other engine can do. Recommendation, personalization and targeting involves evaluating recommender models over content items to select the best ones. Vespa lets you build applications which does this online, typically combining fast vector search and filtering with evaluation of machine-learned models over the items. This makes it possible to make recommendations specifically for each user or situation, using completely up to date information.
    Downloads: 9 This Week
    Last Update:
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  • Powering the best of the internet | Fastly Icon
    Powering the best of the internet | Fastly

    Fastly's edge cloud platform delivers faster, safer, and more scalable sites and apps to customers.

    Ensure your websites, applications and services can effortlessly handle the demands of your users with Fastly. Fastly’s portfolio is designed to be highly performant, personalized and secure while seamlessly scaling to support your growth.
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  • 5
    OpenRefine

    OpenRefine

    A free, open source, powerful tool for working with messy data

    OpenRefine is a powerful Java-based tool designed to work with messy data and improve it. With OpenRefine you can load data, understand it, clean it up, transform it, reconcile it, and augment it with web services and external data. It allows you to do this all from a web browser and in the convenience and privacy of your own computer. OpenRefine keeps all data securely in your computer by running a small server on it, using your web browser to interact with it. When you're ready, then that is the only time the data will be shared outside of your computer. OpenRefine is available in over 15 languages, is cross-platform and part of the Code for Science & Society.
    Downloads: 8 This Week
    Last Update:
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  • 6
    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)
    Leader badge
    Downloads: 50 This Week
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  • 7
    The Lemur Project

    The Lemur Project

    Search engine and data mining applications and ClueWeb datasets.

    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.
    Downloads: 22 This Week
    Last Update:
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  • 8
    Conductor

    Conductor

    Conductor is a microservices orchestration engine

    We built Conductor to help us orchestrate microservices-based process flows at Netflix with the following features, a distributed server ecosystem, which stores workflow state information efficiently. Allow creation of process/business flows in which each individual task can be implemented by the same/different microservices. Simple interface to connect workers, which execute the tasks in workflows. Full operational control over workflows with the ability to pause, resume, restart, retry and terminate. Allow greater reuse of existing microservices providing an easier path for onboarding. Event handlers to control workflows via external actions. Client implementations in Java, Python and other languages. Various configurable properties with sensible defaults to fine-tune workflow and task executions like rate limiting, concurrent execution limits etc.
    Downloads: 4 This Week
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  • 9

    Java CSV Library

    Small, fast Java library for reading and writing CSV files

    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.
    Downloads: 11 This Week
    Last Update:
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

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  • 10
    Moved to https://github.com/DANS-KNAW/dans-dbf-lib.
    Leader badge
    Downloads: 20 This Week
    Last Update:
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  • 11
    Blazegraph (powered by bigdata)

    Blazegraph (powered by bigdata)

    Fast, scalable, robust graph database platform

    Blazegraph has moved to Github. Please see https://github.com/blazegraph/database/.
    Downloads: 9 This Week
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  • 12
    The Malete database core is the new basis of OpenIsis, which has its roots in the UNESCO CDS/ISIS database. Traditionaly used in libraries; now a general purpose highspeed database.
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    Downloads: 20 This Week
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  • 13
    Anti-Plagiarism (Check on plagiarism)
    Anti-Plagiarism - software designed to effectively detect and thereby prevent plagiarism. It is a versatile tool to deal with World Wide Web copy-pasting information from the assignment of authorship. The goal of this program is to help reduce the impact of plagiarism on education and educational institutions. Checking documents in a format *.rtf, *.doc, *.docx, *.pdf Check the source code C, C++, C#, Java, ... Download - https://sourceforge.net/projects/antiplagiarismc/files/AntiPlagiarism.jnlp Documentation - https://sourceforge.net/projects/antiplagiarismc/files/doc_us.pdf
    Downloads: 34 This Week
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  • 14
    NeoDatis ODB is a new generation Object Oriented Database. ODB is a real native and transparent persistence layer for Java, .Net, Groovy, Scala and Google Android. ODB is very simple and very fast and comes with a powerful query language.
    Downloads: 6 This Week
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  • 15
    ConceptBase.cc

    ConceptBase.cc

    A Database System for Metamodeling and Method Engineering

    ConceptBase.cc is a multi-user deductive and object-oriented database system for metamodeling and method engineering. Includes a graphical client that builds upon the logic-based features of the ConceptBase.cc server. The data model is O-Telos. ConceptBase.cc can represent information at the data level (example data, traces of process executions etc.), the class level (schemas, process definitions etc.), the metaclass level (constructs of modeling languages), the meta-metaclass level (constructs for defining modeling languages), and so forth. ConceptBase.cc is developed by the ConceptBase Team at University of Skövde (HIS). ConceptBase.cc supports Linux, Mac OS X and Windows. ConceptBase.cc is free software distributed under a FreeBSD-style license.
    Leader badge
    Downloads: 25 This Week
    Last Update:
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  • 16
    Attendance Marker Solution

    Attendance Marker Solution

    Fast and Secure way to use Attendance Software for your Organization!

    Attendance Marker Solution is the attendance marking software connected with local-based or server-based MySQL Server Engine. The connectivity and installation is very easy for use.
    Downloads: 24 This Week
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  • 17
    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.
    Downloads: 6 This Week
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  • 18
    eXist-db

    eXist-db

    eXist-db is a feature rich Open Source native XML database

    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
    Downloads: 23 This Week
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    See Project
  • 19
    olap4j

    olap4j

    Open Java API for OLAP

    olap4j is an open Java API for connecting to OLAP servers and writing analytic applications. Code is at https://github.com/olap4j/olap4j.
    Downloads: 5 This Week
    Last Update:
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  • 20
    OpenVista (R)
    OpenVista(R) is the open-source version of VistA, an enterprise grade health care information system developed by the U.S. Veterans Affairs and deployed at 1,500 global facilities. OpenVista is a registered trademark of Medsphere Systems Corporation
    Downloads: 3 This Week
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  • 21

    WhiteBear

    a set of foundation classes for database engines

    WhiteBear is a set of foundation classes for database engines written in Java. It supports object and relational database, is highly portable and may be used in embedded or server environment. Project has been created from scratch and plan to includes storage engine, server, SQL interpreter, ODBC, JDBC and JDO interface
    Downloads: 14 This Week
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  • 22

    teiid

    An Enterprise Information Integration System

    Teiid is Enterprise Information Integration system. Teiid can virtualize and integrate data from multiple disparate information sources and provide as single Virtual DB
    Downloads: 13 This Week
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  • 23
    TM4J is a topic map engine implemented entirely in Java. Topic maps are a standard paradigm for the interchange of knowledge structures. This project aims to produce a complete suite of tools for creating, processing and publishing topic map information.
    Downloads: 6 This Week
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  • 24
    Sequoia is a database clustering middleware offering load balancing and transparent failover. Databases are replicated over multiple nodes and Sequoia balances the queries between them. Sequoia supports online maintenance and recovery operations.
    Downloads: 10 This Week
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  • 25
    This tool can parse the oracle statspack flat file report, create tables with sp content in html format. It is a good tool for DBA and Oracle Developer.
    Downloads: 5 This Week
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