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

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  • 1
    x64dbg

    x64dbg

    An open-source x64/x32 debugger for windows.

    An open-source x64/x32 debugger for windows. Development is done on GitHub (https://github.com/x64dbg/x64dbg). Daily snapshots are uploaded here, snapshots for every commit can be found on http://releases.x64dbg.com
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    4.7 out of 5 stars 22 Reviews
    Downloads: 10,691 This Week
    Last Update:
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  • 2
    Integrated Development Environment for some microcontrollers based on 8051(e.g. AT89S8253). Supported languages are Assembly and C. It has its own simulator, assembler, editor and many other tools. See the project web site for more details and the newest updates.
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    4.6 out of 5 stars 9 Reviews
    Downloads: 645 This Week
    Last Update:
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  • 3
    ImHex

    ImHex

    A Hex Editor for Reverse Engineers, Programmers

    ImHex is a free, open-source hex editor designed for reverse engineers, software developers, cybersecurity professionals, and digital forensics analysts. The software provides advanced tools for inspecting, editing, and analyzing binary files through a modern, customizable interface. ImHex features a powerful Pattern Language that allows users to define custom data structures, parse complex file formats, and visualize binary information. Its integrated disassembler, data inspector, entropy analyzer, and YARA scanning capabilities make it suitable for malware analysis, vulnerability research, and reverse engineering. The platform supports large files, process memory inspection, remote file access, and advanced searching across multiple data formats and encodings. Available for Windows, macOS, Linux, and FreeBSD, ImHex combines powerful binary analysis capabilities with a user-friendly interface, extensive customization options, and an expandable ecosystem of plugins and patterns.
    Downloads: 57 This Week
    Last Update:
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  • 4
    RedtDec

    RedtDec

    RetDec is a retargetable machine-code decompiler based on LLVM

    The decompiler is not limited to any particular target architecture, operating system, or executable file format. ELF, PE, Mach-O, COFF, AR (archive), Intel HEX, and raw machine code supported. 32-bit: Intel x86, ARM, MIPS, PIC32, and PowerPC 64-bit: x86-64 supported. Demangling of symbols from C++ binaries (GCC, MSVC, Borland). Reconstruction of functions, types, and high-level constructs. Output in two high-level languages: C and a Python-like language. Generation of call graphs, control-flow graphs, and various statistics. Detection and reconstruction of C++ class hierarchies (RTTI, vtables). Signature-based removal of statically linked library code. Static analysis of executable files with detailed information. We currently support Windows (7 or later), Linux, macOS, and (experimentally) FreeBSD. An installed version of RetDec requires approximately 5 to 6 GB of free disk space.
    Downloads: 24 This Week
    Last Update:
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  • 5
    CEmu emulator

    CEmu emulator

    Third-party TI-84 Plus CE / TI-83 Premium CE emulator

    Developer-oriented emulator of the eZ80-based TI-84 Plus CE / TI-83 Premium CE calculators. CEmu is a third-party TI-84 Plus CE / TI-83 Premium CE calculator emulator, focused on developer features. The core is programmed in C and the GUI in C++ with Qt, for performance and portability reasons. CEmu works natively on Windows, macOS, and Linux! Easy setup - get running by doing a one-time-only connection of your calculator! Accurate and fast emulation. Customizable speed/throttling. Resizable calculator screen. "Always-on-top" window option. Screen capture (PNG). Screen recording (animated PNG). File sending/receiving (not for Apps/OS yet). Multiple keybinding presets. Emulation states for efficient saving / restoring. Color skins (like the real devices). Available in English, French, Spanish, and Dutch.
    Downloads: 18 This Week
    Last Update:
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  • 6
    REDasm

    REDasm

    The Open Source Disassembler

    REDasm is a cross platform disassembler and binary analysis tool, built for both hobbyists and professional reverse engineers. It supports various CPU architectures and executable formats and also offers an interactive listing, control flow graph view, cross-references, string detection and automatic function recovery. [SUPPORTED FILE FORMATS] PE, ELF, MZ, NE, LE, PSX-EXE, PSX-BIOS, XBE (Xbox), ZX Spectrum (SNA, Z80, TAP), iNES (mapper 0 only) [SUPPORTED ARCHITECTURES] x86/x86_64, ARM/THUMB, AArch64, Z80, MOS6502 [EXTRA FEATURES] VB5/6 Decompiler, MSVC RTTI and EH (EXPERIMENTAL) For detailed tier list of every feature see https://redasm.dev
    Downloads: 13 This Week
    Last Update:
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  • 7
    iaito

    iaito

    Official radare2 GUI

    iaito is a free, open-source graphical interface for radare2, a reverse engineering and binary analysis framework. Built with Qt, it provides an accessible environment for examining executable files and understanding program structures. The software combines disassembly, binary inspection, and program analysis tools within a unified interface. Users can investigate functions, examine memory contents, and explore relationships between different sections of a program. It also supports binary patching, forensic analysis, and binary comparison workflows. iaito maintains compatibility with radare2 commands, plugins, and scripts, allowing users to extend its capabilities. Available for Windows, macOS, and Linux, it helps security researchers, developers, and reverse engineers analyze compiled software.
    Downloads: 6 This Week
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  • 8
    Medusa

    Medusa

    An open source interactive disassembler

    Medusa is a disassembler designed to be both modular and interactive. It runs on Windows and Linux, it should be the same on OSX. This project is organized as a library. To disassemble a file you have to use medusa_text or qMedusa. Medusa requires the following libraries: boost >= 1.55 (system, filesystem, thread, date_time), OGDF (required git), and Qt5 >= 5.2 for the GUI. You also need CMake for compilation and a C++11 compiler (VS2015 update 2 on Windows). Git is optional but allows to clone remote repository for specific features. If you do not wish to install the various dependencies on your system, you can use this docker image instead. Even though it is working out of the box, you may want to customize it to suit your needs or for added security (e.g. restrict ssh access to public key authentication only).
    Downloads: 4 This Week
    Last Update:
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  • 9
    SOAPdenovo2

    SOAPdenovo2

    Large-size genome de-novo assembler

    What's next of SOAPdenovo2: MEGAHIT is the formal successor of SOAPdenovo2 MEGAHIT: An ultra-fast single-node solution for large and complex metagenomics assembly via succinct de Bruijn graph http://www.ncbi.nlm.nih.gov/pubmed/25609793 https://github.com/voutcn/megahit Latest Code on GitHub: https://github.com/aquaskyline/SOAPdenovo2 SOAPdenovo is a novel short-read assembly method that can build a de novo draft assembly for human-sized genomes. The program is specially designed to assemble Illumina short reads. It creates new opportunities for building reference sequences and carrying out accurate analyses of unexplored genomes in a cost effective way. SOAPdenovo2 is the successor of SOAPdenovo. Cite the paper published in GigaScience (see website below) if you want to cite SOAPdenovo2.
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    5.0 out of 5 stars 1 Review
    Downloads: 59 This Week
    Last Update:
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  • 10
    APNG Disassembler

    APNG Disassembler

    Deconstruct APNG file into a sequence of PNG frames.

    This program converts APNG file into a sequence of individual PNG frames. Command-line interface and GUI viersions. Also, APNG Assembler can be found at http://sourceforge.net/projects/apngasm
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    3.0 out of 5 stars 3 Reviews
    Downloads: 62 This Week
    Last Update:
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  • 11
    Hexplorer

    Hexplorer

    Binary (hexadecimal) editor for Windows

    Binary (hexadecimal) editor for Windows
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    3.5 out of 5 stars 17 Reviews
    Downloads: 27 This Week
    Last Update:
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  • 12
    BinExport

    BinExport

    Export disassemblies into Protocol Buffers

    BinExport is a disassembly export plugin developed by Google as part of the BinDiff ecosystem, designed for reverse engineering and binary analysis. It works with popular disassemblers including IDA Pro, Binary Ninja, and Ghidra, enabling the export of disassembly data into a structured Protocol Buffer format. This exported data can then be used for binary comparison, diffing, and advanced analysis tasks through BinDiff or other compatible tools. BinExport captures detailed information such as instructions, functions, control flow graphs, and metadata, providing a machine-readable representation of a program’s disassembled structure. It supports multiple export formats, including binary, text, and statistics outputs, and can be used interactively or via scripting (IDC, IDAPython, or Ghidra’s headless mode). The project includes complete build instructions for Linux, macOS, and Windows, ensuring reproducibility across platforms.
    Downloads: 1 This Week
    Last Update:
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  • 13
    dasm430

    dasm430

    A disassembler and a simulator for the MSP430 CPU

    A disassembler and a simulator for the MSP430 CPU. Both programs only read TI-TXT files. Licensed under the Simple Public License (SimPL) 2.0. For full license information, please read license.txt. Compiled executables are available for Windows and Mac OS X. Linux users will have to compile their own binaries. Instructions for compilation are included in README.txt. A Qt-based GUI is available for sim430. Binaries only for OS X, for now. Source files can be found in src/qt folder.
    Downloads: 20 This Week
    Last Update:
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  • 14
    Easy Beginner's Environment in QT

    Easy Beginner's Environment in QT

    This is a port of the ebe programming environment to QT.

    The ebe programming environment is a nice IDE designed for developing Assembly programs. It also handles C and C++ programs as well since there was not much extra effort. It used to support Fortran and this could return if people want Fortran. This project is an effort to recode ebe using C++ and QT. Originally ebe was coded using Python, Tkinter and Pmw, which worked out pretty well. The QT environment offers substantially better GUI controls. The most obvious difference is that Python ebe has a lot of separate windows, while the QT ebe will use 1 main window and a collection of dockable subwindows. This will make it easier to use.
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    2.0 out of 5 stars 2 Reviews
    Downloads: 20 This Week
    Last Update:
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  • 15
    Saksham: Multi-Core Processor Simulator

    Saksham: Multi-Core Processor Simulator

    x86 Multi-Core Microprocessor and assembler simulator written in C++

    Saksham: Customizable x86 Based Multi-Core Microprocessor Simulator. A C++ Project aimed at creating a platform for simulating basic features (Register and Instruction Set) of a x86 Based Multi Core Microprocessor and assembler family. This project is implementation of the concept presented in the paper: https://ieeexplore.ieee.org/document/5231896 Documentation: https://sourceforge.net/p/saksham/wiki/Home/
    Downloads: 13 This Week
    Last Update:
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  • 16
    DIS6502

    DIS6502

    The Interactive MOS 6502 Disassembler for Windows

    Am MOS 6502 disassembler designed specifically to support Atari binary files. It can also handle C64 binary files, Oric binary files and raw files. Visit https://github.com/dis6502/dis6502 for the current version.
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    4.6 out of 5 stars 5 Reviews
    Downloads: 3 This Week
    Last Update:
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  • 17

    FCML

    A machine code manipulation library for Intel 64 and IA-32.

    This is a general purpose machine code manipulation library for IA-32 and Intel 64 architectures. The library supports UNIX-like systems as well as Windows and is highly portable. The FCML library is free for commercial and non-commercial use as long as the terms of the LGPL license are met. Currently it supports such features as: - A one-line disassembler - A one-line assembler - An experimental multi-pass load-and-go assembler (Multi line!) - Support for the Intel and AT&T syntax - An instruction renderer - An instruction parser - Instructions represented as generic models - UNIX/GNU/Linux and Windows support - Portable - written entirely in C (no external dependencies) - C++ wrapper - Supported instruction sets: MMX, 3D-Now!, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AVX, AVX2, AES, TBM, BMI1, BMI2, HLE, ADX, CLMUL, RDRAND, RDSEED, FMA, FMA4, LWP, SVM, XOP, VMX, SMX, AVX-512 Source code moved to: https://github.com/swojtasiak/fcml-lib
    Downloads: 4 This Week
    Last Update:
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  • 18
    class-reader

    class-reader

    JVM class file parser and disassembler C++ library.

    Downloads: 4 This Week
    Last Update:
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  • 19

    UniSIMD-assembler

    SIMD macro assembler unified for ARM, MIPS, PPC and x86

    UniSIMD assembler is a high-level C/C++ macro assembler framework unified across ARM, MIPS, POWER and x86 architectures. It establishes a subset of both BASE and SIMD instruction sets with clearly defined common API, so that application logic can be written and maintained in one place without code replication. The assembler itself isn't a separate tool, but rather a collection of C/C++ header files, which applications need to include directly in order to use. At present, Intel SSE/SSE2/SSE4 and AVX/AVX2/AVX-512 (32/64-bit x86 ISAs), ARMv7 NEON/NEONv2, ARMv8 AArch32 and AArch64 NEON, SVE (32/64-bit ARM ISAs), MIPS 32/64-bit r5/r6 MSA and POWER 32/64-bit VMX/VSX (little/big-endian ISAs) are mostly implemented (/w horizontal reductions) although scalar improvements, wider SIMD vectors with zeroing/merging predicates in 3/4-operand instructions are planned as extensions to current 2/3-operand SPMD-driven vertical SIMD ISA. See README file.
    Downloads: 2 This Week
    Last Update:
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  • 20
    The ucsd-psystem-xc project provides a Pascal cross compiler for producing UCSD p-System code files on Posix hosts, such as linux. It also provides some other related tools, such as a disassembler.
    Downloads: 1 This Week
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  • 21
    VirtuAL3101 provides a series of tools to develop effects using the AL3101 DSP from Alesis. It includes an assembler/disassembler, a simulator, an application generator with its graphical interface and various effects.
    Downloads: 1 This Week
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  • 22
    Goal of this project is to make a working Intel 8051 simulator. It covers also some I/O devices like keypad, LCD screen and GUI in Qt.
    Downloads: 0 This Week
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  • 23
    A open source java card virtual machine implementation. And also some part of the VM code can be used as part of kinds of tools such as javacard bytecode disassembler.
    Downloads: 0 This Week
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  • 24
    small & symple disassembler, resource unpacker and flowchart graphical editor
    Downloads: 0 This Week
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  • 25
    BASM

    BASM

    The Basic Computer Assembler

    BASM is a user friendly and easy to use assembler for The Basic Computer, capable of creating the object, list and hex file and giving detailed error reports. It's more of academic use for students who wish to understand how does The Basic Computer actually work. Alongside this assembler, soon a simulator will also be available at BASM's SourceForge page.
    Downloads: 0 This Week
    Last Update:
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