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

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • Stay in Flow. Let Zenflow Handle the Heavy Lifting. Icon
    Stay in Flow. Let Zenflow Handle the Heavy Lifting.

    Your AI engineering control center. Zenflow turns specs into shipped features using parallel agents and multi-repo intelligence.

    Zenflow is your engineering control center, turning specs into shipped features. Parallel agents handle coding, testing, and refactoring with real repo context. Multi-agent workflows remove bottlenecks and automate routine work so developers stay focused and in flow.
    Try free now
  • 1
    Pencil

    Pencil

    The Pencil Project's unique mission is to build a free tool

    Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. The latest stable version of Pencil is 3.1.0 which contains stability fixes and many new features. More details can befound in the releaste notes. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Starting from 2.0.2 Pencil has even more shape collections included by default. The list of built-in collections now includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes.
    Downloads: 12 This Week
    Last Update:
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  • 2
    pngcrush and other tools for manipulating PNG (Portable Network Graphics) and MNG (Multiple-image Network Graphics) files.
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    Downloads: 248 This Week
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  • 3
    MultiEX Commander is a tool that has been in development in-house at XeNTaX from 1997 on. With it, the user can access game resource archives in a WinZip-like manner, and alter the contents if needed. Support is for over 165 game archive formats!
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    Downloads: 28 This Week
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  • 4
    Nx

    Nx

    Smart, fast and extensible build system

    Nx builds a project graph by analyzing your workspace, which it then uses to only rebuild what is necessary and to never run the same computation twice. Nx also helps establish structured code sharing and ownership management to keep the workspace maintainable. Nx provides a modern integrated dev experience. It has a high-quality VS Code plugin, interactive visualizations, GitHub integration and more. The core of Nx is generic, simple, and unobtrusive. Nx Plugins are completely optional, but they can really level up your productivity. Whether you have one project or one thousand, Nx will keep your CI fast and your workspace maintainable. Nx is smart. It analyzes your workspace and figures out what can be affected by every code change. That's why Nx doesn't rebuild and retest everything on every commit, it only rebuilds what is necessary. Nx comes with an interactive dependency diagram to help explore and understand your workspace.
    Downloads: 1 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 5
    deej

    deej

    Set app volumes with real sliders! Arduino project to build hardware

    deej is an open-source hardware volume mixer for Windows and Linux PCs. It lets you use real-life sliders (like a DJ!) to seamlessly control the volumes of different apps (such as your music player, the game you're playing and your voice chat session) without having to stop what you're doing. Control your microphone's input level. Lightweight desktop client, consuming around 10MB of memory. Runs from your system tray. Helpful notifications to let you know if something isn't working. The sliders are connected to 5 (or as many as you like) analog pins on an Arduino Nano/Uno board. They're powered from the board's 5V output (see schematic). The board connects via a USB cable to the PC. The code running on the Arduino board is a C program constantly writing current slider values over its serial interface. The PC runs a lightweight Go client in the background. This client reads the serial stream and adjusts app volumes according to the given configuration file.
    Downloads: 1 This Week
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  • 6
    nivo

    nivo

    A rich set of dataviz components

    nivo provides a rich set of dataviz components, built on top of the awesome d3 and Reactjs libraries. Several libraries already exist for React d3 integration, but just a few provide server side rendering ability and fully declarative charts. In order to use nivo, you have to install the @nivo/core package and then choose some of the scoped @nivo packages according to the charts you wish to use. Given an array of data series having an id and a nested array of points (with x, y properties), it will compute the line for each data series. All datum having null x or y will be treated as holes, thus portions of the corresponding line will be skipped. You can fully customize it using the circleComponent property to define your own, if you wish to do so you should have a look at the default SVG component to get started. Bar chart which can display multiple data series, stacked or side by side. Also supports both vertical and horizontal layout, with negative values descending below the x axis.
    Downloads: 1 This Week
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  • 7
    A Java Utility to edit and create new game content for Might and Magic 8 with support for 6 and 7. This is an extension of the no-longer-developed UnLod java utility for MM8. MM8LevelEditor is no longer actively developed. A new MMLevelEditor is being re
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    Downloads: 16 This Week
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  • 8
    HelpMaker is a Help Authoring Tool to make WinHelp, HTML-Help, HTML-Website and RTF (i.e., manuals) files. HelpMaker is fully functional GUI help authoring tool written in Delphi. Many open-source developers use this to document their open-source project
    Downloads: 12 This Week
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  • 9
    An unofficial dev kit for the PV2 camera. Currently includes v8 uRISC assembler, linker, and source examples. It can be used to create firmware patches and uploadable programs for the $10 and $20 Ritz/CVS "single-use" PV2 digital camera.
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    Downloads: 3 This Week
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  • Field Service+ for MS Dynamics 365 & Salesforce Icon
    Field Service+ for MS Dynamics 365 & Salesforce

    Empower your field service with mobility and reliability

    Resco’s mobile solution streamlines your field service operations with offline work, fast data sync, and powerful tools for frontline workers, all natively integrated into Dynamics 365 and Salesforce.
    Learn More
  • 10
    Flamebird MX BennuGD IDE
    Flamebird is an IDE for the open source game development language Bennugd (http://bennugd.org/) and Fenix(http://fenix.divsite.net). Our aim is to integrate in a professional environment a powerfull code editor, a project management system and editors an
    Downloads: 1 This Week
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  • 11
    GBAconv is a set of tools aimed at GameBoy Advance developers, allowing to convert WAV sounds and PCX images into C arrays to be included in GBA programs.
    Downloads: 1 This Week
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  • 12
    SDL for GP32. SDL is a cross-platform multimedia library designed to provide level access to audio, keyboard, joystick, and 2D video framebuffer. The GP32 is a Korean handheld console.
    Downloads: 1 This Week
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  • 13
    The command line tool intended for combine lot of small images into few big texture atlases.
    Downloads: 1 This Week
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  • 14

    AuroraExt

    Helpful tools to extend the NWN Toolset

    AuroraExt is a collection of tools to overcome cerain limitations of the original Neverwinter Nights (NWN) Aurora Toolset and the NWN module development process.
    Downloads: 0 This Week
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  • 15
    A plug-in allowing home-brew game developers using the Microsoft XNA framework to import content from Blender's native binary format.
    Downloads: 0 This Week
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  • 16
    A framework for creating java GUI application by defining GML(Graphics Markup Language) only drag and drop GUI component in CS3 software. After define GML this software can generate source code automatically comply with the framework(View,Modal,Controlle
    Downloads: 0 This Week
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  • 17
    D.R.I.V.E. - Digraph Research Inside Virtual Environments. A set of library/tools for the research of available paths inside VRML worlds.
    Downloads: 0 This Week
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  • 18
    D2D Map Editor enables the rapid creation of tile based map grids. It’s easy to learn and can be used by programmers and non-programmers alike. The maps generated can be deployed in games and applications developed in C++, C#, ActionScript and XML.
    Downloads: 0 This Week
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  • 19
    This project is horribly outdated, and will never be updated again. I'd recommend against using. The DGM 3D Engine is a Visual Basic Project. The engine can be loaded up as reference file (DLL) in most Visual Studio languages, allthough Visual Basic is adviced.
    Downloads: 0 This Week
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  • 20
    A multi-language IDE written entirely with C#.NET. My goals include giving developers a framework that will allow them to add new languages, provide diagramming services to support language modeling and visualization (eg UML Class Diagrams, etc).
    Downloads: 0 This Week
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  • 21
    This project originally was about a megaman clone called "Game Developer Man". Game Developer Man, the game, has long since tanked. However this project has moved on to the KRGP.
    Downloads: 0 This Week
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  • 22
    DreamWeaver MX has no autosave function. This tool implements it by 'clicking' on the Save, or Save All menu items for you (at a regular interval). It is a stand-alone program, not a DreamWeaver MX plugin.
    Downloads: 0 This Week
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  • 23
    A subtitle agent, which developed on Java, helps to create, modify, and operate subtitle files easily. Also providing Java packages for developing subtitle agents conveniently. Moreover, they're free and open-sourced, based on GPL lisence.
    Downloads: 0 This Week
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  • 24
    FX Batch Compiler
    This Windows application supports compilation of FX effect files and HLSL shader files using fxc command line compiler included in DirectX SDK. You can compile many files at time or one file with different settings.
    Downloads: 0 This Week
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  • 25
    A project to dissect the game about the alien menace that has unfortunatly become Abandonware--as well as a really bad arcade game. We are researching X-Com. We can do it, we have the technology to build it bigger, faster, and more slimey.
    Downloads: 0 This Week
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