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

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  • 1
    Code::Blocks

    Code::Blocks

    A free C, C++ and Fortran IDE

    Code::Blocks is a free, open-source, cross-platform C, C++ and Fortran IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. Finally, an IDE with all the features you need, having a consistent look, feel and operation across platforms. Built around a plugin framework, Code::Blocks can be extended with plugins. Any kind of functionality can be added by installing/coding a plugin. For instance, compiling and debugging functionality is already provided by plugins! We hope you enjoy using Code::Blocks! The Code::Blocks Team
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    4.7 out of 5 stars 156 Reviews
    Downloads: 97,114 This Week
    Last Update:
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  • 2
    Lazarus

    Lazarus

    Rapid applications development tool and libraries for FPC

    The Lazarus IDE is a stable and feature rich visual programming environment for the FreePascal Compiler. It supports the creation of self-standing graphical and console applications and runs on Linux, FreeBSD, MacOSX and Windows.
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    4.8 out of 5 stars 159 Reviews
    Downloads: 29,016 This Week
    Last Update:
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  • 3
    CxxTest is a unit testing framework for C++ that is similar in spirit to JUnit, CppUnit, and xUnit. CxxTest is easy to use because it does not require precompiling a CxxTest testing library, it employs no advanced features of C++ (e.g. RTTI) and it supports a very flexible form of test discovery.
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    5.0 out of 5 stars 2 Reviews
    Downloads: 971 This Week
    Last Update:
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  • 4
    strace

    strace

    linux syscall tracer

    The strace project has been moved to https://strace.io. strace is a diagnostic, debugging and instructional userspace tracer for Linux. It is used to monitor and tamper with interactions between userspace processes and the Linux kernel, which include system calls, signal deliveries, and changes of process state. The operation of strace is made possible by the kernel feature known as ptrace.
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    4.9 out of 5 stars 12 Reviews
    Downloads: 306 This Week
    Last Update:
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  • 5
    Lazarus Code and Component Repository
    Lazarus is a free and open source development tool for the Free Pascal Compiler. The purpose of this project is to serve as a Code Repository, Wiki Knowledgebase and support site for converting existing components and libraries to work with Lazarus and the Free Pascal Compiler.
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    5.0 out of 5 stars 14 Reviews
    Downloads: 182 This Week
    Last Update:
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  • 6
    wxHexEditor
    wxHexEditor is another Hex Editor, build because of there is no good hex editor for Linux system, specially for big files. It supports files up to 2^64 bytes. Written with C++/wxWidgets GUI libs and can be used with other OS'es such Windows, Mac OS
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    4.8 out of 5 stars 30 Reviews
    Downloads: 128 This Week
    Last Update:
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  • 7
    Flipper

    Flipper

    A desktop debugging platform for mobile developers

    Flipper is a platform for debugging iOS, Android and React Native apps. Visualize, inspect, and control your apps from a simple desktop interface. Use Flipper as is or extend it using the plugin API. Flipper aims to be your number one companion for mobile app development on iOS and Android. Therefore, we provide a bunch of useful tools including a log viewer, interactive layout inspector, and network inspector. Flipper is built as a platform. In addition to using the tools already included, you can create your own plugins to visualize and debug data from your mobile apps. Flipper takes care of sending data back and forth, calling functions, and listening for events on the mobile app. Both Flipper's desktop app and native mobile SDKs are open-source and MIT licensed. This enables you to see and understand how we are building plugins, and of course join the community and help improve Flipper. We are excited to see what you will build on this platform.
    Downloads: 19 This Week
    Last Update:
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  • 8
    q Go

    q Go

    Quick and dirty debugging output for tired Go programmers

    q is a better way to do print statement debugging. For best results, dedicate a terminal to tailing $TMPDIR/q while you work. You also can simply tail -f $TMPDIR/q, but it's highly recommended to use the provided commands. Type q.Q instead of fmt.Printf and your variables will be printed like the provided example. Faster to type, pretty-printed vars and expressions. Easier to see inside structs, doesn't go to noisy-ass stdout. It goes to $TMPDIR/q. q Go offers pretty colors!
    Downloads: 16 This Week
    Last Update:
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  • 9
    HTTP Toolkit

    HTTP Toolkit

    Electron wrapper to build and distribute HTTP Toolkit

    HTTP Toolkit Desktop is an open-source application that packages HTTP Toolkit into a standalone debugging environment for Windows, macOS, and Linux. It uses Electron to combine the application's graphical interface with its underlying Node.js server. The software enables developers to intercept, inspect, and modify HTTP and HTTPS traffic from browsers, applications, and development environments. Users can analyze requests and responses, examine headers, and inspect structured message bodies. It supports interactive request editing, debugging breakpoints, and custom API requests. The desktop application automatically launches its background server and manages its lifecycle. With traffic interception and testing tools in one interface, HTTP Toolkit helps developers troubleshoot network communication and investigate application behavior.
    Downloads: 15 This Week
    Last Update:
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  • 10
    DUMA (Detect Unintended Memory Access) is a multi-platform memory debugging library. It can detect memory leaks and buffer overruns (or underruns) in a malloc() / new memory buffer. DUMA is a fork of Bruce Perens' Electric Fence library. sourceforge isn't maintained for many years! suggest you want to look at https://github.com/johnsonjh/duma
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    5.0 out of 5 stars 3 Reviews
    Downloads: 101 This Week
    Last Update:
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  • 11
    WinXP, Vista, Win7, linux, OpenSolaris native port of the BSD PSPSDK (ps2dev.org), with freely distributable import libraries and header files (DevPaks) for building cross compiled homebrew Sony PSP (PlayStation Portable) applications.
    4.8 out of 5 stars 4 Reviews
    Downloads: 89 This Week
    Last Update:
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  • 12

    GCC toolchain for MSP430

    Superseded by http://www.ti.com/tool/msp430-gcc-opensource

    This is a port of the GNU C Compiler (GCC) and GNU Binutils (as, ld) for the embedded processor MSP430. Tools for debugging and download are provided (GDB, JTAG and BSL) Obsolete. See http://www.ti.com/tool/msp430-gcc-opensource or upstream GNU tools.
    5.0 out of 5 stars 3 Reviews
    Downloads: 95 This Week
    Last Update:
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  • 13
    scanmem & GameConqueror

    scanmem & GameConqueror

    memory scanner for Linux

    scanmem is a debugging utility designed to isolate the address of an arbitrary variable in an executing process. scanmem simply needs to be told the pid of the process and the value of the variable at several different times. After several scans of the process, scanmem isolates the position of the variable and allows you to modify its value.
    Downloads: 11 This Week
    Last Update:
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  • 14
    This emulator is capable of providing a faithful replication of the HP48. It also has a debugger for the saturn processor.
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    5.0 out of 5 stars 4 Reviews
    Downloads: 68 This Week
    Last Update:
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  • 15
    SpoofMAC

    SpoofMAC

    Change your MAC address for debugging

    SpoofMAC is a command-line utility for changing and restoring MAC addresses on network interfaces in Linux and macOS systems. The project allows users to randomize or manually configure MAC addresses to improve privacy, testing flexibility, or network anonymity in various environments. It automates low-level networking commands and provides a user-friendly interface for managing interface states and address changes safely. SpoofMAC is commonly used for privacy protection on public networks, penetration testing workflows, and network simulation environments where MAC address manipulation is required. The tool also supports restoring the original hardware MAC address and handling multiple network interfaces efficiently. Its lightweight design and straightforward command-line usage make it popular among system administrators, developers, and security researchers.
    Downloads: 10 This Week
    Last Update:
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  • 16
    chrome-remote-interface

    chrome-remote-interface

    Chrome Debugging Protocol interface for Node.js

    chrome-remote-interface is a Node.js library that provides a convenient interface for interacting with the Chrome DevTools Protocol, allowing developers to control and instrument Chromium-based browsers programmatically. The project exposes browser debugging and automation capabilities through a straightforward JavaScript API that abstracts the underlying DevTools protocol commands and events. By connecting to a running browser instance with remote debugging enabled, developers can inspect network activity, manipulate pages, capture screenshots, automate navigation, and analyze performance metrics. The library is commonly used for building browser automation scripts, testing tools, web scraping systems, and custom developer tooling that interacts directly with Chrome internals. Unlike higher-level tools such as Puppeteer, Chrome Remote Interface focuses on exposing the raw protocol in a more flexible and transparent way.
    Downloads: 10 This Week
    Last Update:
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  • 17
    rr

    rr

    Record and Replay Framework

    rr aspires to be your primary C/C++ debugging tool for Linux, replacing — well, enhancing — gdb. You record a failure once, then debug the recording, deterministically, as many times as you want. The same execution is replayed every time. rr also provides efficient reverse execution under gdb. Set breakpoints and data watchpoints and quickly reverse-execute to where they were hit. rr works on real applications and is used by many developers to fix real bugs. It makes debugging hard bugs much easier, but also speeds up debugging of easy bugs.
    Downloads: 10 This Week
    Last Update:
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  • 18
    Rerun

    Rerun

    Visualize streams of multimodal data

    Rerun is an open-source tool that helps developers visualize real-time multimodal data streams, such as images, point clouds, and tensors, for debugging and understanding ML and robotics systems. Designed for use with Python and Rust, it captures logged data and renders it through an interactive desktop interface, making it easier to understand how complex systems behave over time.
    Downloads: 8 This Week
    Last Update:
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  • 19
    Semgrep

    Semgrep

    Lightweight static analysis for many languages

    Static analysis at ludicrous speed. Find bugs and enforce code standards. Find and prevent security issues in Terraform, Docker, Kubernetes, nginx, and AWS configs before they go into production. Go beyond application code and protect the entire stack with a breadth of scanning capabilities. Don't leak secrets, scan every commit and ensure secrets don't make it to production. Protect the privileged CI/CD environment from malicious activity that could result in access to source code, secrets, and more. Run with registry rules or your own. Code is analyzed locally (not uploaded). Get results at ludicrous speed with diff-aware scans, review findings in MR and PR comments, and deploy Semgrep across your organization’s projects. Go beyond the registry with rules specific to your organization. Write rules to enforce your own code guardrails.
    Downloads: 8 This Week
    Last Update:
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  • 20

    bash debugger

    bash debugger

    A gdb-like debugger for bash
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    5.0 out of 5 stars 4 Reviews
    Downloads: 45 This Week
    Last Update:
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  • 21
    Psalm

    Psalm

    A static analysis tool for finding errors in PHP applications

    It’s easy to make great things in PHP, but bugs can creep in just as easily. Psalm is a free & open-source static analysis tool that helps you identify problems in your code, so you can sleep a little better. Psalm helps people maintain a wide variety of codebases, large and small, ancient and modern. On its strictest setting it can help you prevent almost all type-related runtime errors, and enables you to take advantage of safe coding patterns popular in other languages. Psalm also fixes bugs automatically, allowing you to improve your code without breaking a sweat. If Psalm cannot infer a type for an expression then it uses a mixed placeholder type. mixed types can sometimes mask bugs, so keeping track of them helps you avoid a number of common pitfalls. Psalm has a Language Server that’s compatible with a range of different IDEs. Psalm can fix many of the issues it finds automatically.
    Downloads: 6 This Week
    Last Update:
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  • 22
    After a program has been thrown into the world in binary form, it can boomerang back as source code. The Boomerang reverse engineering framework is the first general native executable decompiler available to the public.
    2.5 out of 5 stars 4 Reviews
    Downloads: 123 This Week
    Last Update:
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  • 23
    Proxyman

    Proxyman

    Web Debugging Proxy for macOS, iOS, and Android

    Don't let cumbersome web debugging tools hold you back. With Proxyman's native macOS app, you can capture, inspect, and manipulate HTTP(s) traffic with ease. Intuitive, thoughtful, built with meticulous attention to detail. Comprehensive Guideline to set up with iOS simulator and iOS and Android devices. Proxyman acts as a man-in-the-middle server that capture the traffic between your applications and SSL Web Server. With built-in macOS setup, so you can inspect your HTTP/HTTPS Request and Responses in plain text with just one click. Narrow down your search with Proxyman's Multiple Filters. You can combine complex filtered criteria like Protocol, Content-Type, URL, Request Header, Response Header, Body, etc that find exact what you're looking for.
    Downloads: 5 This Week
    Last Update:
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  • 24
    ECLiPSe CLP

    ECLiPSe CLP

    ECLiPSe Constraint Logic Programming System

    The ECLiPSe Constraint Logic Programming System is designed for solving combinatorial optimization problems, for the development of new constraint solver technology and their hybrids, and for the teaching of modelling, solving and search techniques.
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    5.0 out of 5 stars 1 Review
    Downloads: 74 This Week
    Last Update:
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  • 25
    Bot Framework Emulator

    Bot Framework Emulator

    Locally test and debug chat bots built with the Bot Framework SDK

    Bot Framework Emulator is a desktop application that allows bot developers to test and debug bots, either locally or remotely. Using the Emulator, you can chat with your bot and inspect the messages that your bot sends and receives. The Emulator displays messages as they would appear in a web chat UI and logs JSON requests and responses as you exchange messages with your bot. Before you deploy your bot to the cloud, run it locally and test it using the Emulator. You can test your bot using the Emulator even if you haven't yet created it with Azure Bot Service or configured it to run on any channels. Before connecting your bot to the Bot Framework Emulator, you need to run your bot locally. You can use Visual Studio or Visual Studio Code to run your bot, or use the command line. When you are developing behind a corporate proxy, the Emulator will use the configured environment variables HTTP_PROXY and HTTPS_PROXY, which specify the proxy URL route for HTTP and HTTPs requests.
    Downloads: 4 This Week
    Last Update:
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