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.

  • Zenflow- The AI Workflow Engine for Software Devs Icon
    Zenflow- The AI Workflow Engine for Software Devs

    Parallel agents. Multi-agent orchestration. Specs that turn into shipped code. Zenflow automates planning, coding, testing, and verification.

    Zenflow is the AI workflow engine built for real teams. Parallel agents plan, code, test, and verify in one workflow. With spec-driven development and deep context, Zenflow turns requirements into production-ready output so teams ship faster and stay in flow.
    Try free now
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    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
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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
    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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  • 4
    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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  • 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
    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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  • 6
    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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  • 7
    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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  • 8
    The command line tool intended for combine lot of small images into few big texture atlases.
    Downloads: 1 This Week
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  • 9

    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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  • Reach Your Audience with Rise Vision, the #1 Cloud Digital Signage Software Solution Icon
    Reach Your Audience with Rise Vision, the #1 Cloud Digital Signage Software Solution

    K-12 Schools, Higher Education, Businesses, Restaurants

    Rise Vision is the #1 digital signage company, offering easy-to-use cloud digital signage software compatible with any player across multiple screens. Forget about static displays. Save time and boost sales with 500+ customizable content templates for your screens. If you ever need help, get free training and exceptionally fast support.
    Learn More
  • 10
    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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  • 11
    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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  • 12
    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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  • 13
    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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  • 14
    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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  • 15
    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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  • 16
    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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  • 17
    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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  • 18
    Graph Package (GPack) is a solution for developing simple graphics in Delphi environment. GPack includes 2 components TGraph & TGraph3D which help users to create 2D/3D graphic applications in an easiest and quickest way.
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    Downloads: 0 This Week
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  • 19
    GSL is aimed at providing a tool for rapid graphical programming. GSL is an object-oriented script language with graphical support. Its goal is to provide an easy way to specify worlds and at the same time enable the coding of behaviours of those worlds.
    Downloads: 0 This Week
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  • 20
    JBean3D project aims to develop JavaBeans components representing classes in Java3D.
    Downloads: 0 This Week
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  • 21
    Using Delphi to write a complete Isometric Engine and Editor and to port it to Kylix upon it's release. Features... 1. Cross-platform Isometric game engine and editor. 2. Full OO game object inheritance model so objects can be handled...
    Downloads: 0 This Week
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  • 22
    Java n-tier Framework and GUI Screen builder/designer, supporting 1, 2 and 3 tier mixed architectures to databases, application servers or local persistent data in files. Extensive documentation including launching from a Web Server.
    Downloads: 0 This Week
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  • 23
    ­A useful collection scripts (backup, security, system management, games, network, etc.). This project development in Bash + Zenity.
    Downloads: 0 This Week
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  • 24
    A Python library for manipulation of WAD files.
    Downloads: 0 This Week
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  • 25
    Omorphia is a graphic, multimedia and gaming library containing Delphi and Freepascal components to simplify multimedia based apllication development on W9xNT and Unix platforms including support for various graphic and sound interfaces and libraries.
    Downloads: 0 This Week
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