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

  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
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  • Train ML Models With SQL You Already Know Icon
    Train ML Models With SQL You Already Know

    BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

    Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
    Try Free
  • 1
    omnisharp-roslyn

    omnisharp-roslyn

    OmniSharp server (HTTP, STDIO) based on Roslyn workspaces

    OmniSharp is a .NET development platform based on Roslyn workspaces. It provides project dependencies and C# language services to various IDEs and plugins. OmniSharp is built with the .NET Core SDK on Windows and Mono on OSX/Linux. It targets the net472 target framework. For platforms other than Windows, OmniSharp ships with an embedded Mono which is based on version 6.12.0, includes MSBuild 16.8.0 and is provisioned during the build script. If Mono is globally installed on the system, OmniSharp will prefer it over the embedded version, however version >=6.4.0 is required (the lowest version with at least MSBuild 16.3.0). For Arch Linux users, you need package mono-msbuild (>= 16.3). In addition, if you need the HTTP interface and you want to run on Linux, you'll also need to make sure that you have libuv installed.
    Downloads: 5 This Week
    Last Update:
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  • 2
    nuBuilder Forte

    nuBuilder Forte

    nuBuilder Forte is a cloud database builder.

    nuBuilder Forte is the 4th version of nuBuilder. A open-source browser-based tool created for developing web-based database applications. nuBuilder uses either MySQL or MariaDB databases and gives its users the ability to do database operations like... • Search, Create, Insert, Read, Update, Delete ✪ With low-code tools that create ... - Forms with the Form Builder - Fast Reports - Database queries with the SQL Builder - Customised date and number formats with the Format Builder - Calculated fields with the Formula Builder - Email Templates - Move and resize objects. - Further customisation that can be done with JavaScript and PHP. ✪ nuBuilder stores all forms, reports, company data and PHP/JavaScript code in MySQL. You can backup your entire application within a single database file. ✪ Easy installation: - Download and unzip the nuBuilder files - Upload to your webserver - Create a database (e.g. nubuilder4) and optionally a user - Make a copy of
    Downloads: 20 This Week
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  • 3
    stylex-jsx

    stylex-jsx

    Full CSS support for JSX without compromises

    Full, scoped and component-friendly CSS support for JSX (rendered on the server or the client). Code and docs are for v3 which we highly recommend you to try. Looking for styled-jsx v2? Switch to the v2 branch. Blazing fast and optimized CSS rules injection system based on the CSSOM APIs. Full CSS support, no tradeoffs in power. Runtime size of just 3kb (gzipped, from 12kb). Complete isolation: Selectors, animations, keyframes. Built-in CSS vendor prefixing. Very fast, minimal and efficient transpilation. High-performance runtime-CSS-injection when not server-rendering. Future-proof, equivalent to server-renderable "Shadow CSS". Source maps support. Dynamic styles and themes support. CSS Preprocessing via Plugins. To skip scoping entirely, you can make the global-ness of your styles explicit by adding global. To make a component's visual representation customizable from the outside world there are three options.
    Downloads: 3 This Week
    Last Update:
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  • 4
    openPLM - open source PLM
    open source PLM system - Product Structure management (BOM management) system and Electronic documents management or Entreprise Content Management (ECM) system
    Downloads: 13 This Week
    Last Update:
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 5
    Interchange is the open source e-commerce platform that enables you to easily build your online shop. It offers more flexible and scalable approach than other shopping cart software.
    Downloads: 9 This Week
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  • 6
    BIRT iHub F-Type

    BIRT iHub F-Type

    Free report server for creating data-driven apps

    Open Source BIRT (Business Intelligence and Reporting Tools) is a visual-based development tool used to create data visualizations and reports that can be embedded into rich client and web applications. BIRT is a top-level designer tool within the Eclipse Foundation, an independent not-for-profit open source community and consortium of software vendors. For the first time ever, Open Source developers using BIRT can now leverage technology previously reserved for commercial applications with BIRT iHub F-Type, a free enterprise-grade server for managing and delivering BIRT content to any number of users, while instantly enhancing Open Source reporting functionality and reducing deployment time down to minutes. With out-of-the-box Big Data support, BIRT iHub F-Type connects to all relational databases and allows unlimited data-in for creating data visualizations and dynamic report views.
    Downloads: 4 This Week
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  • 7
    Blunder is an automated tool for analyzing chained exceptions in Java. It's usefull for classify, generate a customized error message and a list for possible solutions.
    Downloads: 2 This Week
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  • 8
    Imixs Workflow

    Imixs Workflow

    Imixs Workflow - the open source business process management

    Manage Complexity of Your Business Process... Imixs-Workflow is the open source solution for human-centric business process management. This means supporting human skills, activities and collaboration in a model driven architecture. The Imixs-Workflow engine protects and securely distributes your business data based on the BPMN 2.0 standard. http://www.imixs.org
    Downloads: 1 This Week
    Last Update:
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  • 9
    Supedian

    Supedian

    POS Software for Takeaway, Restaurant, Touch POS, Without Internet

    Epos system with receipt printer and barcode scanner (extra) with supedian Epos software for takeaway and restaurants and retail shop call 07722398470 software 1-year free licence call or WhatsApp cash drawer can be provided we are leading Epos and software company in Europe and Manchester, Software works without Internet Connection. All major option available for Restaurant and Retail Shops. Customers using our Software. RESTAURANT Table Management specifically built for high-functioning restaurants. Instantly send orders to the kitchen display or printer. CAFE & BAR No matter the demand, count on SUPEDIAN POS to boost your service speed. SUPEDIAN doesn’t rely on the internet to run. DELIVERY & TAKEAWAY Easily swap between various menus and price lists. Gain easy access to customer info while taking orders with the Caller ID feature.
    Downloads: 1 This Week
    Last Update:
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  • Try Google Cloud Risk-Free With $300 in Credit Icon
    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
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  • 10
    Muse: Middleware Universal Scripting idE

    Muse: Middleware Universal Scripting idE

    Automate: WebSphere; WebLogic; JBoss; Glassfish; Tomcat; Linux, WinRM

    Simplify... Aggregate... Automate... Simplify... *** OPEN SOURCE - GPL3/EPL. Use Python / Jython to automate WebSphere, WebLogic, JBoss, Glassfish and Tomcat Middleware Estates over JMX, both SSL and non-SSL + Linux SSH (agent-less) + WinRM Target all 5 servers, Linux and WinRM from the same workspace. Familiar Eclipse based Jython and Python Development IDE, pre-configured and ready to go. 4-Click Installer. Win x64, Linux WINE x64. Built-In JVM. Java 8/9/10, Amazon Corretto, JETPack13/14/16, IBM SDK Compatible. *** Now with powerful JBoss / GlassFish / Tomcat / Linux Active Auditing Framework. Tomcat / Glassfish 2 Python - Configuration Snapshots *** Infrastructure-as-Code, Code-Writing-Code Designed to Run on JETPack: https://sourceforge.net/projects/jetpack Muse.2025.06.x - Win 10 / Win11 Muse.2023.12.x - Win7 / Win8 / Win 10 / Win11
    Downloads: 1 This Week
    Last Update:
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  • 11
    Signal Visualizer is a client/server system that uses TCP/IP to display digital signals (DSP) graphically onto a remote server. The only requirements for the embedded system are : a physical IP interface and a C/C++ compiler that includes a socket API.
    Downloads: 1 This Week
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  • 12
    A knowledgment management system written in Java under JBoss 4.2.3 Server, with richfaces 3.3.0BETA4. Including fileconversion from html to pdf and rich:editor component without special syntaxing.
    Downloads: 0 This Week
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  • 13
    Bluewave is an object oriented database and application server that provides a neat intuitive way to store data. Bluewave also features a powerful client and server API.
    Downloads: 0 This Week
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  • 14
    Servlet container extensions that help web developers write full featured Java web applications.
    Downloads: 0 This Week
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  • 15
    DCF is based on ACE,it provides a optional Name-Service for locating service, a single interface for both client and server. Anyone can embed DCF in a program to implement communication easily.
    Downloads: 0 This Week
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  • 16
    Enterprise Message Broker
    Downloads: 0 This Week
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  • 17
    Software designed for the small clinics that they require of a tool to manage and to take a detailed control of his activities including handling of inventories and consultations completely in Spanish.
    Downloads: 0 This Week
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  • 18

    GenomeWiki (GWiki)

    Embeddable/J2E/Desktop Java Wiki CMS

    Downloads: 0 This Week
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  • 19
    JBoss Nagios Integration

    JBoss Nagios Integration

    Poll JMX attributes from Java based applications with Nagios

    Integrate JBoss into Nagios monitoring through a small Collector MBean and a perl based Nagios plugin. Lets you read you and monitor JMX values from JBoss servers very efficiently. On the Nagios server no JDK or JBoss installation is needed.
    Downloads: 0 This Week
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  • 20
    JOMS is an extremely lightweight, simple Java Enterprise Service Bus. While similar to MULE and MINA, it can be run in a small memory environment or in an embedded server environment. It can also be transparently networked or clustered.
    Downloads: 0 This Week
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  • 21
    Light Portal is an Ajax and Java based Open Source Portal and Social Collaboration Software which can be seamless plugged in to any Java Web Application or as an independent Portal Server, see more details at official website www.lightportal.org.
    Downloads: 0 This Week
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  • 22
    OlsenRoutes is a software environment with a powerful difference. It provides online users with a library of statistical tools and access to Olsen's database (1985 through today) of tick-by-tick foreign exchange trading prices.
    Downloads: 0 This Week
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  • 23
    Sfeb is a Simple and Flexible Enterprise Bus. Its purpose is to share business components on a network, and make them accessible through various protocols(http, jms, ...). Sfeb can be adapted, to your needs with the Sfeb sdk.
    Downloads: 0 This Week
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  • 24
    A framework to support dynamic adaptation behavior in Java EE enterprise systems and to develop self-managing applications. StarMX utilizes JMX features and can be integrated with different policy/rule engines to enable self-management capabilities.
    Downloads: 0 This Week
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  • 25
    Tiny Project - project management system for small companies
    Downloads: 0 This Week
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