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.

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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: 47,454 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: 324 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: 30 This Week
    Last Update:
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  • 4
    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: 29 This Week
    Last Update:
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  • 5

    Feign

    Make writing Java http clients easier

    Feign is a Java to HTTP client binder that was built primarily to make writing Java http clients easier. Inspired by previous projects Retrofit, JAXRS-2.0 and WebSocket, Feign was designed to reduce the complexity that is often involved in binding the Denominator uniformly to HTTP APIs, no matter the ReSTfulness. Feign works by processing annotations into a templatized request, to which arguments are applied in a straightforward manner before output. While it may only support text-based APIs, it simplifies system aspects dramatically and makes it much easier to unit test your conversions. Feign makes use of great tools like Jersey and CXF for writing Java clients for ReST or SOAP services. It also lets you write your own code on top of http libraries, and connects your code to http APIs with little overhead.
    Downloads: 3 This Week
    Last Update:
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  • 6
    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:
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  • 7
    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: 3 This Week
    Last Update:
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  • 8
    HTTP Kit

    HTTP Kit

    Clojure HTTP server/client library with WebSocket support

    http-kit is a minimalist, event-driven, high-performance Clojure HTTP server/client library with WebSocket and asynchronous support. A simple, high-performance event-driven HTTP client+server for Clojure. HTTP Kit is an (almost) drop-in replacement for the standard Ring Jetty adapter. So you can use it with all your current libraries (e.g. Compojure) and middleware. Using an event-driven architecture like Nginx, HTTP-kit is very, very fast. It comfortably handles tens of thousands of requests/sec on even midrange hardware. Here is another test about how it stacks up with others. It's not only fast, but efficient! Each connection costs nothing but a few kB of memory. RAM usage grows O(n) with connections. Written from the ground-up to be lean, the entire client/server is available as a single ~90kB JAR with zero dependencies and ~3k lines of (mostly Java) code. Synchronous is simple. Asynchronous is fast & flexible.
    Downloads: 2 This Week
    Last Update:
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  • 9
    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: 2 This Week
    Last Update:
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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: 11 This Week
    Last Update:
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  • 11
    WWW XML+XSLT Content management system on J2SE with Tomcat and SQL-92 compatiblity database (like free MySQL or Oracle). Supports many sites, many groups, many users. XML-definition of content types, security system. Created with Apache Avalon.
    Downloads: 10 This Week
    Last Update:
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  • 12
    Cicada

    Cicada

    Fast lightweight HTTP service framework

    Fast, lightweight Web framework based on Netty; without too much dependency, and the core jar package is only 30KB. Configuration files can also be read in multiple environments, just add VM parameters, also ensure that the parameter name and file name are consistent.
    Downloads: 1 This Week
    Last Update:
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  • 13
    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: 1 This Week
    Last Update:
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  • 14
    Winstone is a Java servlet container (spec v2.5) that aims at being light, fast and reliable. It requires no configuration files, and is extremely simple to use.
    Downloads: 3 This Week
    Last Update:
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  • 15
    Jcrontab is a scheduler written in java. Jcrontab is designed to be extended and integrated with any project. Reads and stores the tasks to execute in a file, a database or an EJB and provides a basic web UI.
    Downloads: 7 This Week
    Last Update:
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  • 16
    StarWebService 2.0 is an open-source Web Services Container based on Apache Axis 1.1, enhanced with the capability of wrapping back-end CORBA Object and CORBA Component Model as Web Services, and the flexibility of service management. It implements the O
    Downloads: 7 This Week
    Last Update:
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  • 17
    FX Player is a Web-based streaming server with a Flash iTunes-like interface. It shares your MP3 library and allow access to your tracks through the Internet. Coded in Java, FX Player run on most platforms, including Mac OS X, Windows, Linux and Unix.
    Downloads: 6 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: 2 This Week
    Last Update:
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  • 19
    FOXY is a filtering web proxy. Originally designed to provide device-independent access to the World Wide Web, it may also be used for HTTP-filtering, extraction and reauthoring of existing web content or as security device against web based attacks.
    Downloads: 2 This Week
    Last Update:
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  • 20
    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: 2 This Week
    Last Update:
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  • 21
    Tammi is a JMX-based Java application development framework and run-time container providing a service architecture for J2EE server side Internet applications that are accessible from any device that supports HTTP including mobile (wireless) handsets.
    Downloads: 3 This Week
    Last Update:
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  • 22
    CoffeeWebServer

    CoffeeWebServer

    An http 1.1 server written in Java

    NIO HTTP/1.1 Web Server with support for multi-part forms, custom servlets, cookies, sessions, SSL, gzip and deflate encodings, pipelining, and more! Written in 100% Java with core server reliance only on the base jdk library.
    Downloads: 1 This Week
    Last Update:
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  • 23
    The goal of Simple is to bring the power of simplicity to the world of server side Java. The primary focus of the project is to provide a truly embeddable Java based HTTP engine capable of handling enormous loads. Simple provides a truly asynchronous service model, request completion is driven using an internal, transparent, monitoring system.
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    Downloads: 1 This Week
    Last Update:
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  • 24
    HPCP (High Performance Channel Protocol) is a transactional data exchange specification, defining an implementation and usage of HTTPS, XML, SOAP, and LDAP. The EEAT HPCP implementation is written in JAVA.
    Downloads: 2 This Week
    Last Update:
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  • 25
    (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: 2 This Week
    Last Update:
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