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

  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

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    Custom auth drains 25% of dev time and risks 62% more breaches, stalling enterprise deals. Frontegg platform delivers a simple login box, seamless authentication (SSO, MFA, passwordless), robust multi-tenancy, and a customizable Admin Portal. Integrate fast with the React SDK, meet compliance needs, and focus on innovation.
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  • 1
    GeoServer
    GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Designed for interoperability, it publishes data from any major spatial data source using open standards: WMS, WFS, WCS, WPS and REST
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    Downloads: 36,182 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: 808 This Week
    Last Update:
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  • 3
    Suwayomi-Server

    Suwayomi-Server

    A rewrite of Tachiyomi for the Desktop

    A free and open source manga reader server that runs extensions built for Tachiyomi. Suwayomi is an independent Tachiyomi compatible software and is not a Fork of Tachiyomi. Suwayomi-Server is as multi-platform as you can get. Any platform that runs java and/or has a modern browser can run it. This includes Windows, Linux, macOS, chrome OS, etc. Follow Downloading and Running the app for installation instructions.
    Downloads: 86 This Week
    Last Update:
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  • 4
    Eclipse Jetty Canonical Repository

    Eclipse Jetty Canonical Repository

    Eclipse Jetty - Web Container & Clients - supports HTTP/2, HTTP

    Jetty provides a web server and servlet container, additionally providing support for HTTP/2, WebSocket, OSGi, JMX, JNDI, JAAS and many other integrations. These components are open source and are freely available for commercial use and distribution. Jetty is used in a wide variety of projects and products, both in development and production. Jetty has long been loved by developers due to its long history of being easily embedded in devices, tools, frameworks, application servers, and modern cloud services. With the direction of Java and the JakartaEE project (formerly JavaEE) in 2020, the current recommended version of Jetty for use depends upon the servlet api version, desired licensing, and package namespace as well as the intended Java version.
    Downloads: 3 This Week
    Last Update:
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

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    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 5
    Milkman

    Milkman

    An extensible request/response workbench

    Milkman is heavily inspired by Postman. But I got sick of all those electron-based applications that need ages and loads of memory to start up. Therefore, this is a JavaFx-based workbench for crafting requests/responses. It is not limited to e.g. HTTP (or more specifically rest) requests. Due to nearly everything being a plugin, other things are possible, like database requests or GRPC, GraphQl, etc. Request-types (e.g. Http Request), request-aspects (e.g. Headers, Body, etc), editors for request aspects (e.g. table-based editors for headers), importers, whatever it is, you can extend it. The core application only handles Workspaces with Environments, Collections, Requests, and their aspects. Several plugins are provided already that extend the core application to be a replacement for postman. Crafting and Executing Http/Rest requests with json highlighting. Support Proxy-server configuration and SSE.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 6
    NanoHTTPD

    NanoHTTPD

    Tiny, easily embeddable HTTP server in Java

    NanoHTTPD is a light-weight HTTP server designed for embedding in other applications, released under a Modified BSD licence. It is being developed at Github and uses Apache Maven for builds & unit testing. Nanolets are like servlets only that they have a extremely low profile. They offer an easy to use system for a more complex server application. We are currently in the process of stabilizing NanoHTTPD from the many pull requests and feature requests that were integrated over the last few months. The next release will come soon, and there will not be any more "intended" major changes before the next release. If you want to use the bleeding edge version, you can clone it from Github, or get it from sonatype.org (see "Maven dependencies / Living on the edge" below). Fully functional HTTP(s) server consisting of one (1) Java file, ready to be customized/inherited for your own project. Simple examples on how to customize NanoHTTPD.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    Reactor Netty

    Reactor Netty

    TCP/HTTP/UDP/QUIC client/server with Reactor over Netty

    Reactor Netty offers non-blocking and backpressure-ready TCP/HTTP/UDP/QUIC clients & servers based on Netty framework. With Gradle from repo.spring.io or Maven Central repositories (stable releases only). Reactor is a fourth-generation reactive library, based on the Reactive Streams specification, for building non-blocking applications on the JVM. Reactor is fully non-blocking and provides efficient demand management. It directly interacts with Java's functional API, CompletableFuture, Stream, and Duration. Reactor offers two reactive and composable APIs, Flux [N] and Mono [0|1], which extensively implement Reactive Extensions. Well-suited for a microservices architecture, Reactor offers backpressure-ready network engines for HTTP (including Websockets), TCP, and UDP.
    Downloads: 2 This Week
    Last Update:
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  • 8
    Proxyee

    Proxyee

    HTTP proxy server,support HTTPS & websocket

    Proxyee is a JAVA-written HTTP proxy server library that supports HTTP, HTTPS, and WebSocket protocols, and supports MITM (Man-in-the-middle), which can capture and tamper with HTTP, and HTTPS packets. The CA certificate (src/resources/ca.crt) from the project needs to be imported to a trusted root certificate authority. The CA certificate (src/resources/ca.crt) from the project needs to be imported to a trusted root certificate authority. You can use the CertDownIntercept interceptor to enable the web certificate download feature.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    JETTY HAS MOVED TO ECLIPSE!!!! The latest releases of Jetty are hosted from http://eclipse.org/jetty. Jetty is an open-source project providing a HTTP server, HTTP client and javax.servlet container.
    Downloads: 5 This Week
    Last Update:
    See Project
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  • 10
    LocalServer

    LocalServer

    LocalServer is a Web Server software for windows

    LocalServer is a Web Server software for Windows that allows you to make your Computer into a Web Server Locally in which there is the Apache Server, PHP, and MySQL Server, which has been summarized in a single container setup.exe. The advantages of this software is Free except you do not need to advance other similar software, which is installed by default on your computer, because the Apache Server and MySQL Server will be installed on LocalServer first time on a different port, the Apache server running on port 4008 and MySQL Server running on port 3308. The latest version has been on the Release of version 1.0.1 that is made on the date of 26-10-2012, which has been running stable on Windows devices with the addition of the mail server that Mercury mail. Hopefully LocalServer useful for you to use, and congratulations creative with LocalServer Thank you!
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    Downloads: 3 This Week
    Last Update:
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  • 11
    Library of Congress - Transfer Tools
    Tools developed by the Library of Congress and their partners in the National Digital Information Infrastructure and Preservation Program (NDIIPP) for the purpose of validation and transfer of data that conforms to the BagIt specification. This project has been moved to https://github.com/LibraryOfCongress
    Downloads: 2 This Week
    Last Update:
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  • 12
    The XUL (XML UI Language) project provides free test suites to help ensure interoperability between different XUL motors/browsers and free, open-source show-case examples (aka blue prints) to demo the power of XML for creating UIs.
    Downloads: 7 This Week
    Last Update:
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  • 13
    removed
    Downloads: 4 This Week
    Last Update:
    See Project
  • 14
    Nacho is an application server and web development platform. It features a fourth generation template language and database abstraction layer to dynamically produce HTML, XML, JPEG, PNG, CSV, ZIP and other content, not limited to text and HTML alone.
    Downloads: 2 This Week
    Last Update:
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  • 15
    !! PJL Compressing Filter is renamed to ziplet and hosted on github now!! See here: https://github.com/ziplet/ziplet A J2EE servlet filter which compresses data written to the response. It supports several algorithms (gzip, deflate, etc.) and emphasizes minimal memory usage and high throughput. Also provides detailed performance stats. Feel free to fork pjl-comp-filter on Github: https://github.com/ziplet/ziplet
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    (Media Tester) Is a Multicast Monitoring Tool This project used to Monitor Multicast Streams, Bit rate, Alarms, Reports, Video Recording, http://media-tester.sourceforge.net
    Downloads: 3 This Week
    Last Update:
    See Project
  • 17
    The Staged Event-Driven Architecture (SEDA) is a framework for building scalable, high-performance Internet services that are capable of sustaining enormous variations in load.
    Downloads: 3 This Week
    Last Update:
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  • 18
    This project is a graphical user-friendly Eclipse plugin providing non regression and stress tests of Web application servers. Test scripts are recorded from any internet browser thanks to a built-in HTTP proxy and can be fully edited in a dedicated GUI.
    Downloads: 1 This Week
    Last Update:
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  • 19
    Curl ORB for java
    Curl ORB is to comunicate between Curl and server side java. It can generate Curl source code from POJO which stands for Plain Old Java Object, and invoke the java methods on server side from Curl application.
    Downloads: 2 This Week
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  • 20
    JDictd is a set of Java programs that implement the Dictionary Server Protocol (DICT) as specified in RFC 2229.
    Downloads: 2 This Week
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  • 21
    The Little Portal Gizmo is a small Java web application container based on Eclipse plug-ins and the Apache HTTP Core. It uses a custom and very light weight API. The web applications you develop for the Gizmo have the form of Eclipse plug-ins.
    Downloads: 2 This Week
    Last Update:
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  • 22
    R and R - short for REST and Relaxation, is REALLY simple REST client / server offering compatible libraries in PHP and Java and other languages to come. This project has been moved to: https://github.com/jamesdlow/randr
    Downloads: 2 This Week
    Last Update:
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  • 23
    TINY HTTP Daemon 0.01 - A flexible tiny web server
    Downloads: 2 This Week
    Last Update:
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  • 24
    Java File Uploader
    Please update v 2.0 if you have downloaded before 16th Feb 2014! Simple java file uploader. The main goal to overcame 2GB browser limit. * Simple GUI * Upload unlimited file sizes from client to server via HTTP * Split uploading file to chunks * MD5 chunk verification on server. Final MD5 confirmation. * Http auth Adv: https://play.google.com/store/apps/details?id=org.vikulin.etherwallet
    Downloads: 1 This Week
    Last Update:
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  • 25
    HtZip is a lightweight HTTP Server that serves files out of Zip Files on the server by only uncompressing the requested file.
    Downloads: 1 This Week
    Last Update:
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