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

  • Paessler - Monitor Your Whole Network in Minutes Icon
    Paessler - Monitor Your Whole Network in Minutes

    Auto-discovery finds your devices and deploys pre-configured sensors instantly. No project plan required, just visibility from day one.

    Waiting weeks for a monitoring rollout isn't an option when infrastructure doesn't stop running. PRTG's auto-discovery scans your network and suggests from over 200 pre-configured sensor types, so you're watching servers, applications and devices within minutes, not after a multi-week deployment. Enterprise-strength monitoring, without the enterprise complexity. Start your free trial today.
    Start Free 30-Day Trial
  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
    Start Free
  • 1
    ProGuard Java Optimizer and Obfuscator

    ProGuard Java Optimizer and Obfuscator

    Java class file shrinker, optimizer, obfuscator, and preverifier

    ProGuard has moved to Github now: https://github.com/Guardsquare/proguard ProGuard is a free Java class file shrinker, optimizer, obfuscator, and preverifier. It detects and removes unused classes, fields, methods, and attributes. It optimizes bytecode and removes unused instructions. It renames the remaining classes, fields, and methods using short meaningless names. ProGuard is useful for making code more compact and more efficient, on the desktop, on tablets, on smartphones, and on embedded devices. It also makes code more difficult to reverse engineer.
    Leader badge
    Downloads: 141 This Week
    Last Update:
    See Project
  • 2
    Command-line/Ant-task/embeddable text file preprocessor. Macros, flow control, expressions. Recursive directory processing. Extensible in Java to display data from any data sources (as database). Can generate complete homepages (tree of HTML-s, images, etc.)
    Leader badge
    Downloads: 231 This Week
    Last Update:
    See Project
  • 3
    SMC - The State Machine Compiler

    SMC - The State Machine Compiler

    Translates state machine into a target programming language.

    SMC takes a state machine stored in a .sm file and generates a State pattern in 14 programming languages. Includes: default transitions, transition args, transition guards, push/pop transitions and Entry/Exit actions. See User Manual for more info.
    Leader badge
    Downloads: 26 This Week
    Last Update:
    See Project
  • 4
    Jalopy is a source code formatter/beautifier/pretty printer for the Java programming language. It is aimed to provide a full-featured, yet free alternative to the well-known Jindent. Plug-ins for Ant, Eclipse, IDEA, JBuilder, JDeveloper, jEdit, NetBeans.
    Downloads: 18 This Week
    Last Update:
    See Project
  • Veeam Data Platform v13.1 - Get Your Free Trial Icon
    Veeam Data Platform v13.1 - Get Your Free Trial

    Secure by design, portable by default. Recover clean, fast, anywhere. Start a free trial.

    Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.
    Try it Free
  • 5
    Community Z Tools

    Community Z Tools

    Tool support for the Z formal notation

    Community Z Tools Project (CZT): Tools for editing, typechecking and animating Z specifications and related notations. Includes a Java framework for building formal methods tools. NOTE: development of CZT has now moved to GitHub: https://github.com/community-z-users/czt
    Leader badge
    Downloads: 26 This Week
    Last Update:
    See Project
  • 6

    APKRepatcher

    APKRepatcher helps you to modify an existing apk with simple GUI

    APKRepatcher helps you to modify an existing apk using a simple user friendly GUI. It lets you edit java/smali code from an APK and rewrite the changes back to the modified signed APK. Additionally, it provides you option to convert Dex, Jar, Class, Smali, Class from one format to another. APKRepatcher makes use of dex2jar, jadx, rsyantaxtextarea, zip4j, apktool
    Downloads: 11 This Week
    Last Update:
    See Project
  • 7
    The purpose of this project is to provide an Ant-based cpp-like preprocessing capability using the Velocity Template Engine.
    Downloads: 17 This Week
    Last Update:
    See Project
  • 8
    EasyStruts provide advanced support for developing Struts web applications with Eclipse . keywords: MVC, Struts, Eclipse, Java
    Downloads: 4 This Week
    Last Update:
    See Project
  • 9
    JAXBBuilder is an eclipse plugin for generating Java classes directly from XML schema, XML or JSON files. The plugin detects document changes and re-generates Java code via Castor or XJC. It includes a JAXB project wizard, and configuration pages
    Downloads: 2 This Week
    Last Update:
    See Project
  • Host LLMs in Production With On-Demand GPUs Icon
    Host LLMs in Production With On-Demand GPUs

    NVIDIA L4 GPUs. 5-second cold starts. Scale to zero when idle.

    Deploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
    Start Free
  • 10
    JFlex

    JFlex

    The fast lexer generator for Java

    JFlex is a flex-like lexer generator for Java with emphasis on speed and full Unicode support. It has some not so usual features like negation in regexps and nested input streams. Also reads JLex specifications unchanged.
    Leader badge
    Downloads: 7 This Week
    Last Update:
    See Project
  • 11
    OJ (f.a.k.a. OpenJava) is an object-oriented macro system with a compile time metaobject protocol for Java.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 12
    Strongly-Typed Javascript is a translator from Java its very similar Javascript counterpart. Unlike GWT, STJS doesn’t impose you any library on the client side and any special tool during development apart from a Maven plugin.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 13
    Druid is a GUI tool for database build and management. Users can add/change/delete DB objects (tables, fields, etc). Druid generates for you: SQL scripts, docs in XHTML, PDF, DocBook, etc; code in C, C++ & Java Beans even for JDO and support Castor & OJB
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    Japano is a java-servlet based webapplication toolkit and engine. It offers easy website logic and HTML form creation and offers integration of dynamic javascript updates ( AJAX). A sample webapp makes it easy to start developing with japano.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 15
    XTC4y is a collection of testing utilities for Java Code. It currently provides classes to instanciate an abstract class for testing the implemented methods, an invocation stack tracing the calls on an interface and a LogClassLoader. NOTE: DEVELOPMENT ST
    Downloads: 4 This Week
    Last Update:
    See Project
  • 16
    JavaGuard is a general purpose bytecode obfuscator, designed to fit effortlessly into your regular build and testing process, providing peace of mind that your valuable Java code is more secure against decompilation and other forms of reverse engineering
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    JXCL is a framework for constructing transforming class loaders for Java. It can be used for a wide range of purposes, including automated testing, in particular testing of unit test coverage.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    Java Gui Designer (JGuiD)
    Java Gui Designer(JGuiD)is a graphical user interface designer for java with a special feature WYSIWYG(what you see is what you get). you will be able to see at design time, the exact same thing as you get when the generated source is executed.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Akrogen is code generation Eclipse Plugin (version 3.2.*) oriented components. With Akrogen you can describe your Eclipse Wizards pages with XML/XUL.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 20
    The BeanFactory Tool is a two-way GUI frontend plugin for editing javadoc custom doclets, such as XDoclet. It is build on a general Doclet editing layer running on Netbeans, JBuilder and Eclipse.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 21
    The FXL Project Eclipse Plugin leverages the integration of DSLs, (meta-) modeling approaches, code generation and the development of software configuration tools (sw-component-configuration).
    Downloads: 2 This Week
    Last Update:
    See Project
  • 22
    The only -complete- XUL/embedded scripting solution for Java. JFCML supports not only AWT and Swing; but any class accessible to Java's ClassLoader. Also, most major scripting languages, including JavaScript, BeanShell, Jython, Jacl (Tcl), JRuby, more.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 23

    Java Application Framework For All

    JAFFA is a Rich Web 2.0 POJO based Event-Driven SOA framework

    An Enterprise Focused Java Framework For Rapid Application Development. JAFFA is a Java web application development stack, build around Web 2.0 technologies (ExtJS, DWR, JAWR) with an extensive service architecture, meta-data layer and rules engine (based on JBoss AOP and Drools). It provides an event driven SOA infrastructure with advanced scheduling and queue sub-systems
    Downloads: 2 This Week
    Last Update:
    See Project
  • 24
    Alchim is a set of tools to help create and build project (mainly java and scala project).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Flow4J-Eclipse is a plugin for the eclipse IDE that enables the modelling of process flows in a drag and drop manner. Building a Flow4J project creates the flow\'s java source code and is then compiled by the JDT plugin. Uses the eclipse-gef framework.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next