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

  • Gen AI apps are built with MongoDB Atlas Icon
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  • 1
    Selenium

    Selenium

    Browser automation framework and ecosystem

    Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should) also be automated as well. If you want to create robust, browser-based regression automation suites and tests, scale and distribute scripts across many environments, then you want to use Selenium WebDriver, a collection of language specific bindings to drive a browser - the way it is meant to be driven. If you want to create quick bug reproduction scripts, create scripts to aid in automation-aided exploratory testing, then you want to use Selenium IDE; a Chrome and Firefox add-on that will do simple record-and-playback of interactions with the browser. If you want to scale by distributing and running tests on several machines and manage multiple environments from a central point.
    Downloads: 152 This Week
    Last Update:
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  • 2
    Grassroots DICOM

    Grassroots DICOM

    Cross-platform DICOM implementation

    Grassroots DiCoM is a C++ library for DICOM medical files. It is accessible from Python, C#, Java and PHP. It supports RAW, JPEG, JPEG 2000, JPEG-LS, RLE and deflated transfer syntax. It comes with a super fast scanner implementation to quickly scan hundreds of DICOM files. It supports SCU network operations (C-ECHO, C-FIND, C-STORE, C-MOVE). PS 3.3 & 3.6 are distributed as XML files. It also provides PS 3.15 certificates and password based mecanism to anonymize and de-identify DICOM datasets.
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    Downloads: 223 This Week
    Last Update:
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  • 3
    reacTIVision
    reacTIVision is a computer vision framework for the fast and robust tracking of markers attached on physical objects, and the creation of multi-touch surfaces. It was designed for the rapid development of table-based tangible user interfaces.
    Downloads: 96 This Week
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  • 4
    JPPF

    JPPF

    The open source grid computing solution

    JPPF makes it easy to parallelize computationally intensive tasks and execute them on a Grid.
    Downloads: 67 This Week
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  • 5
    IKVM.NET is a JVM for the Microsoft .NET Framework and Mono. It can both dynamically run Java classes and can be used to convert Java jars into .NET assemblies. It also includes a port of the OpenJDK class libraries to .NET.
    Downloads: 46 This Week
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  • 6
    A software toolkit for using the EPCglobal Low Level Reader Protocol (LLRP) to communicate with conforming RFID readers.
    Downloads: 16 This Week
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  • 7
    Standard Webhooks

    Standard Webhooks

    The Standard Webhooks specification

    Standard Webhooks is a community-driven specification and set of open-source tools designed to make webhooks consistent, secure, and interoperable across providers. The project defines strict guidelines covering aspects like signature formats, headers, timestamps, replay protection, and forward compatibility. It includes reference implementations for signature verification and signing across multiple languages such as Python, JavaScript/TypeScript, Go, Rust, Ruby, PHP, C#, Java, and Elixir, along with additional community SDKs. The initiative is guided by a technical steering committee with members from companies like Zapier, Twilio, Mux, ngrok, Supabase, Svix, and Kong. Standard Webhooks matters because it eliminates the fragmentation of webhook implementations, reducing consumer effort and enabling seamless verification in apps or even directly in API gateways. By unifying best practices, it improves developer experience, enhances security, and enables new ecosystem tools.
    Downloads: 1 This Week
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  • 8
    The PKI Framework (PKIF) is a cross-platform library for performing PKIX-compliant certificate processing. It includes support for SCVP, OCSP, CMS and Timestamps. It uses Windows CAPI, NSS or Crypto++ for cryptographic services and hardware support.
    Downloads: 24 This Week
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  • 9
    AL-IV

    AL-IV

    ALFOUR Programming language. Simple, safe, power, multi-platform.

    A programming language AL-IV (ALFOUR) is a high-level imperative object oriented programming language with minimal introduction level, easy porting to any platform claiming a very high level of safety and stability, with a controllable level of code protection, high efficiency of an executable code, full independence from a target platform, minimal enter level.
    Downloads: 14 This Week
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

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  • 10
    NRtfTree library is a set of classes written entirely in C# which may be used to manage (read and write) RTF documents in your own applications. A java port of the library can be found in http://www.sgoliver.net/blog/?page_id=92
    Downloads: 4 This Week
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  • 11
    Component (library, framework) refactoring may affect existing applications, where the client code used previous component versions. Our tool preserves applications binary-compatible by generating an adaptation layer out of change history.
    Downloads: 4 This Week
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  • 12
    THIS PROJECT IS DEAD. For the real appcelerator project, please visit http://www.appcelerator.com
    Downloads: 2 This Week
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  • 13
    Framework for supporting reliable, secure E-Business using open standards. Including components for web service calls, non-repudiation, UDDI-registries and a standardized subset of the UBL 2.0 business document profile. Supported for .Net and java.
    Downloads: 2 This Week
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  • 14
    PHPRPC is a Remote Procedure Calling (RPC) protocol that works over the Internet. It is secure and fast. It has a smaller overhead. It is powerful and easy to use. This project is the client and server implementations of the PHPRPC.
    Downloads: 2 This Week
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  • 15
    TXS provides a basic HTTP server. Its own XML Script language can produce, via XSL-T, XForms or XHTML pages (tested with FireFox). It can also be used to read and generate CSV, XML or ZIP files. HTML page capture and email generation also available.
    Downloads: 2 This Week
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  • 16
    ANFireme is the Simple Open Source Edition of AN Framework (ANFire) for PHP, JavaScript , and SQL. ANFireme is Designed and Implemented By Anas M. Naguib
    Downloads: 1 This Week
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  • 17
    BinaryNotes is the Open Source ASN.1 (Abstract Syntax Notation One) framework for Java and .NET based on annotations/attributes. The framework has the flexible ASN.1 compiler, the runtime library that supports BER, DER and PER, and the Message Queues
    Downloads: 1 This Week
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  • 18
    DotNetOpenServer SDK

    DotNetOpenServer SDK

    Lightweight fully extendable client/server application framework

    DotNetOpenServer SDK is an open source lightweight fully extendable TCP socket client/server application framework enabling developers to create highly efficient, fast, secure and robust cloud based smart mobile device and desktop applications. Why? Unlike most application server frameworks, which are implemented over slow inefficient stateless protocols such as HTTP, REST and SOAP that use bulky ASCII data formats such as JSON and XML, DotNetOpenServer has been built from the ground up with highly efficient stateful binary protocols.
    Downloads: 1 This Week
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  • 19
    Fan is an OO, functional programming language designed to cross compile to both the Java and .NET platforms. It provides a concise syntax along with elegant, cross portable libraries. http://www.fandev.org/
    Downloads: 1 This Week
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  • 20
    Girders is an open source framework that enables Model View Controller (MVC) functionality for a multi-tiered software application communicating through SOAP web services. It allows the communication via an ASP.NET front end to a C# or Java back end
    Downloads: 1 This Week
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  • 21
    Jasper in an open source, cross-platform web programming framework.
    Downloads: 1 This Week
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  • 22
    Photon provides very fast access to data containers (queues, maps, etc.) in shared memory - it can retrieve millions of data records per second. It also uses some RDB concepts like transactions and crash recovery. See web site for details.
    Downloads: 1 This Week
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  • 23
    The Squidy Interaction Library eases the design of "post-WIMP" user interfaces by unifying various device drivers, frameworks and tracking toolkits in a common library and provides a central and easy-to-use visual design environment. www.squidy-lib.de
    Downloads: 1 This Week
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  • 24
    A drop-in framework for adding tagging (folksonomy) capabilities to existing applications
    Downloads: 0 This Week
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  • 25
    A framework for abstract access to CM / SCM / SCCM / ALM systems (Bugzilla, ClearCase, Mantis, StarTeam, etc.). The project offers one SDK for Bugzilla, ClearCase, Mantis, StarTeam, etc.
    Downloads: 0 This Week
    Last Update:
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