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

  • 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.
    Start Free
  • Forever Free Full-Stack Observability | Grafana Cloud Icon
    Forever Free Full-Stack Observability | Grafana Cloud

    Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

    Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
    Create free account
  • 1
    Cricket Cage automatically creates JUnit TestCases for repeatable bugs and test scenarios. Include Cricket Cage's AspectJ code to install a code generator, then run the program to generate the TestCase. Finally, add the test case to your build.xml.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Java Decompiler, Disassembler and Bytecode debugger. Decompiler supports Java 5 (e.g. generics, for-each loops etc). Debugger allows user to step through each bytecode and view program state. Contains Swing GUI.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    When testing using a database with rollback after each test, failing tests are very hard to resolve. Data Storm is a simple DB viewer directly launchable from within your test code to enable you to inspect the current state of the database.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    JPDA-based integrated debugger for mixed-language applications. Contact: grisha@alum.mit.edu.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 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.
    Start Free
  • 5

    Debug Visualization Tools

    Visualization tools to help developers analyze program execution

    This is a research project aimed at providing tools to help developers capture and visualize what is actually happening when your program executes. And hopefully make debugging an easier, quicker and less painful process.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    A front end of any dump analyzer ,its purpose to assist developers to analyze dumps generated by processors and find the reason of crash.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    DefectSpy is a tool that allows non-interactive debugging of Java applications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    A bug profiling and -reporting program/lib written in java. It enables implementing (java-)programs to generate meaningful reports in case of an error. They can be submitted (automaticly/dialog) by mail (text, html, bugzilla ..) without external programs
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    To develop a plug-in for eclipse (eclipse.org) allowing for seamless Eiffel Development using the SmartEiffel (smarteiffel.loria.fr) compiler and the ELJ (elj.com) tools.
    Downloads: 0 This Week
    Last Update:
    See Project
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    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.
    Start Free
  • 10
    Eclipse plugin for Prototyping Visual Interpreters and Debuggers for Domain-specific Languages.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    LOLCode IDE plugin for Eclipse. LOLCode is a new humorous language designed to teach those new to programming, and to be enjoyed by the rest of us. This plugin does syntax highlighting, code folding, debugging and content assistance.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    An eclipse plugin providing tail in view component.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    A plug-in for Eclipse that allows users to debug programs using UML models in order to detect regions of divergence between the model and the program.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    ExStudio is a set of development tools for the "Ex" virtual machine. It includes the vm itself, a compiler, an assembler and a debugger.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Easy to use Java utility to collect method level performance data for any Java applications without modifying its code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    FLABot is a fault-localization and debugging tool for Eclipse plug-ins, which is based on architectural information for aproximating those regions of code where faults are most likely originated.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    An Eclipse 3.0 compatible plugin which allows BEA's WebLogic Server (6.1, 7.1 and 8.1) to be managed from within eclipse and thus easily debug deployed J2EE applications in BEA.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    FProfiler is a Java Profiler using log4j. Its very fast because it inserts the needed instructions into the byte-code of the class. It can be used to find "Hotspots" in Java programs, libs and servlet environments simply every Java class.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Fireclipse: experiments in leveraging Eclipse + Firefox for Javascript Development
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Fitster is a graphical front end to the open source Fit testing framework developed by Ward Cunningham. (fit.c2.org) Our goal is to create a platform independent interactive application aimed at testers to assist with the assembly and execution of Fit
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Follow is a simple Java application which allows a user to monitor several log files concurrently. The source for this project is now being maintained at http://hallwaytech.github.com/follow
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Freebug is a collection of Eclipse plugin that visualizes runtime object and database relationships to help debug or understand code and data.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23

    GDBServer Extender

    moved to http://sourceforge.net/projects/gdbx/

    This project is moved to http://sourceforge.net/projects/gdbx/ 项目更名为gdbx,请移步至 http://sourceforge.net/projects/gdbx/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    GNUDE is a complete suite of GNU C, C++, Fortran, and Java Cross Compilers, and the GDB CPU Simulator and Debugger for embedded microprocessor applications development. Targets development for ARM7, ARM9, and XScale applications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    GT

    GT

    Debugging tool for bug hunting and performance tuning on smartphones

    GT (Great Tit) is a portable debugging tool for bug hunting and performance tuning on smartphones anytime and anywhere just as listening music with Walkman. GT can act as the Integrated Debug Environment by directly running on smartphones. With the help of GT, you can carry out the following jobs only using one smartphone: quick performance tests (CPU, memory, flow, power, fluency tests etc.), viewing developer log and crash log, capturing the network packets, debugging the APP internal parameters and code time-consuming statistics. If the functions GT provides cannot meet your requirements, you can also develop your own GT plugins with special functions to help solving more complicated debugging issues. The IOS GT is a Framework package, which must be compiled into your APPs before being used. It can be supported by both iPhone and iPad APPs.
    Downloads: 0 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB