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.

  • 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.

    Easily implement secure login experiences for AI Agents - from interactive chatbots to background workers with Auth0. Auth for GenAI is now available in Developer Preview
    Try free now
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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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
    Leader badge
    Downloads: 38,682 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.
    Leader badge
    Downloads: 582 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: 54 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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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 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: 2 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:
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  • 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
    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: 4 This Week
    Last Update:
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  • 9
    Pi3Web is a multithreaded, highly configurable multiple platform HTTP 1.0/1.1 web server written in C++. Pi3Web 2.0 supports among other things CGI, FCGI, Win-CGI, SSI, directory indexing, SSL, embedded perl, PHP4, Servlets, JSP and XSLT.
    Downloads: 5 This Week
    Last Update:
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  • Secure remote access solution to your private network, in the cloud or on-prem. Icon
    Secure remote access solution to your private network, in the cloud or on-prem.

    Deliver secure remote access with OpenVPN.

    OpenVPN is here to bring simple, flexible, and cost-effective secure remote access to companies of all sizes, regardless of where their resources are located.
    Get started — no credit card required.
  • 10
    TJWS is an Open Source HTTP Server and Servlet container written in 100% Java. It's designed to be a light weight, high performing, secure, embeddable, extensible and flexible. Very small footprinted (~100K), CGI, J2EE/JSP compatible. Servlet spec 3.1
    Downloads: 7 This Week
    Last Update:
    See Project
  • 11
    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: 2 This Week
    Last Update:
    See Project
  • 12
    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!
    Leader badge
    Downloads: 2 This Week
    Last Update:
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  • 13
    This aims to be a cross platform GUI control panel for XAMPP. The GUI provided with XAMPP works well only under Windows. This aims to provide a unified GUI on all OS's. Currently, KDE and GNOME are supported. Looking for help with Mac support.
    Leader badge
    Downloads: 5 This Week
    Last Update:
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  • 14
    TINY HTTP Daemon 0.01 - A flexible tiny web server
    Downloads: 3 This Week
    Last Update:
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  • 15
    BigApache for Windows is a free Enterprise Ready Server. It is suitable for the semiprofessional use or for the program development of Html / PHP / Mysql / Perl / Python / ASP::Apache or Java projects (JBoss with Tomcat).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    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.
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    DEVELOPMENT HAS MOVED TO GITHUB: https://github.com/lazerdye/arrowheadasp The ArrowHead ASP Server is an 100% Java ASP Servlet supporting the VBScript programming language. It runs as a Java Servlet under an existing Java Servlet engine.
    Downloads: 2 This Week
    Last Update:
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  • 18
    Proxy for debugging web apps. All info from request and response with decompression. Allows to set latency, bandwidth or filtering of specific pages. To evaluate high latency,AJAX debugging,page load time,time schema or to verify submitted data.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    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: 2 This Week
    Last Update:
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  • 20
    FileExchange allows you to exchange files with other users, who only need a browser to upload or download files from your PC. The program itself is a HTTP web server with an graphical user interface written in Java.
    Downloads: 2 This Week
    Last Update:
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  • 21
    A small, beanshell-enabled, java-based HTTP server (daemon), with core HTTP 1.0/1.1, POST/GET/HEAD, SSL support that runs in user mode without install and is rich in authentication. Created by Nagy Elemer Karoly.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 22
    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: 1 This Week
    Last Update:
    See Project
  • 23
    HttpBridge is a web http proxy, also called CGI-proxy. It is implemented by Java Servlets. It allows designated family members, friends, and co-workers who are behind a firewall or in the countries where internet is restricted to access liberal internet.
    Downloads: 1 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
    Java Library to assist in recording and troubleshooting http by providing an implementation of a proxy and having extensible classes to handle post/pre processing which can be used to carry out custom actions or logging of the transactions.
    Downloads: 1 This Week
    Last Update:
    See Project
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