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

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

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

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  • 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: 31 This Week
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  • 2
    v2flyNG

    v2flyNG

    A V2Ray client for Android, support v2fly core

    v2flyNG is a mobile client that packages the V2Ray/V2Fly networking core into an Android application with a touch-friendly UI. It focuses on making modern protocols—such as VMess, VLESS, and Trojan—accessible without requiring shell access or manual config editing. Profiles can be added via subscription links or QR codes, and the app merges and updates them on schedule to keep node lists fresh. Per-app proxy controls allow you to include or exclude specific applications, which is useful for balancing privacy with bandwidth and latency. The client exposes routing controls, TLS settings, custom DNS, and UDP handling so advanced users can fine-tune behavior. Status panels and logs help diagnose connectivity issues and confirm that rules are being applied as intended.
    Downloads: 13 This Week
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  • 3
    Flox

    Flox

    Developer environments you can take with you

    Flox is a portable, reproducible developer-environment and package-management system that lets you compose and share per-project stacks across the full software lifecycle. Instead of snowflake machines, teams define environments that layer or replace dependencies exactly where needed, then activate the same environment locally, in CI, or on production hosts. The GitHub repo and docs present a developer-first UX, plus integrations such as a VS Code extension that makes activating and working within Flox environments seamless. The ecosystem includes CI building blocks—for example, a CircleCI Orb—to install and activate environments as part of builds and tests. Flox’s messaging focuses on faster onboarding and “time-to-activation,” reducing friction for new contributors and multi-repo organizations. In practice, it functions as both the package source and the environment switcher, keeping toolchains isolated and reproducible.
    Downloads: 1 This Week
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  • 4
    A linker for MSDOS and MSWindows.
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    Downloads: 15 This Week
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  • Application Monitoring That Won't Slow Your App Down Icon
    Application Monitoring That Won't Slow Your App Down

    AppSignal's Rust-based agent is lightweight and stable. Already running in thousands of production apps.

    Full APM with errors, performance, logs, and uptime monitoring. 99.999% uptime SLA on the platform itself.
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  • 5
    LabMACOSX
    LabMACOSX: Is a laboratory of applications written in Applescript language. Brutosx is brutus.pl remote login and password bruteforce cracker inserted inside the application Brutosx (need only of Net::Telnet Perl module are required get them at CPAN, while the list of users and passwords, and the service is inserted inside the application). SSHOSX is ssh application client to establish an ssh connection from client to server, Nmaposx is nmap port scanner invoked from the application Nmaposx (Syntax of nmap is inside the application). Packetstorm is all packet storm exploits database all inserted inside in the application Packetstorm, Shoppingosx an example of https connection. The application Ob open four browsers, Tesseract applications container, TAL, Chatosx, AndroMac, AndroEmu, MySMS, Shutdown, Updater, Search for, MyMaps, SOA, BLI, Xcoder, BasicProg, BasicProg2, VM, D,M&Z Suite Basic and D,M&Z Suite Advanced (POSIX based).
    Downloads: 4 This Week
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  • 6
    The Gedit "builder" plugin is a plugin for the Gnome Text Editor that allows you to compile source code and then click on the compiler output errors to go to those errors in the source code.
    Downloads: 2 This Week
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  • 7

    A fork of BOSSA

    This is a fork of the BOSSA project by ShumaTech.

    BOSSA is a flash programming utility for Atmel's SAM family of flash-based ARM microcontrollers, developed by ShumaTech. The motivation behind BOSSA is to create a simple, easy-to-use, open source utility to replace Atmel's SAM-BA software. This project is a fork, created to temporarily host new modifications to BOSSA until they can be incorporated into the main BOSSA codebase. More information on the original project: BOSSA web site: http://www.shumatech.com/web/products/bossa BOSSA on SourceForge: https://sourceforge.net/projects/b-o-s-s-a/
    Downloads: 5 This Week
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  • 8

    JScriptCompiler

    JScript Compiler or Interpreter

    The class 'JSEvaluator' in this project allows us to interpret expressions in JScript, allowing us to use parameters in the server at runtime. For example: ({@ 1} + {@ 2}) / 100; Parameter {@ 1} : 36 Parameter {@ 2}: 45 Result of the expression: 0.81
    Downloads: 4 This Week
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  • 9
    ElymOs

    ElymOs

    Linux OS from ubuntu, customisable for everyone, social and media

    Ubuntu based GNU/Linux system, use Gnome Shell. Easy for learn Linux and programming. All software of everyday use. Wine and Virtual Machine for use other OS.
    Downloads: 1 This Week
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  • 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.
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  • 10
    autotools-idl is a patch for automake and some autoconf scripts that adds support for IDL and C++ ORBs. It provides full support for compiling IDL files to C++ stubs and skeletons. The autoconf scripts provide unified detection of different C++ ORBs.
    Downloads: 1 This Week
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  • 11

    bfm

    BigFileManager - Manage files outside of your VCS

    This tool is intended to manage big files out of your VCS but in your workarea. It's like mercurial largefile extension but independend of any VCS. Instead of the big file itself only a list of filenames with their checksums (md5) are committed to the VCS. The BFM can check for missing or outdated bigfiles and downloads them from a server using CURL.
    Downloads: 1 This Week
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  • 12

    pyexpander

    A powerful macro processor based on python

    Pyexpander is a powerful macro processor based on python. Instead of simple macro replacement it offers evaluation of arbitrary python expressions and execution of python code. Pyexpander is Turing Complete.
    Downloads: 1 This Week
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  • 13
    Akira

    Akira

    Native Linux App for UI and UX Design built in Vala and GTK

    Akira is a native Linux Design application built in Vala and GTK. Akira focuses on offering a modern and fast approach to UI and UX Design, mainly targeting web designers and graphic designers. The main goal is to offer a valid and professional solution for designers who want to use Linux as their main OS.
    Downloads: 0 This Week
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  • 14
    Batch Insert License

    Batch Insert License

    Prepend a copyright/license declaration to many files at once.

    Batch Insert License is used to prepend a block of text, describing the applicable software license, to many source files automatically. It can be used to: - Add a specified license comment block to the top of each source file in your project. - Replace an existing license comment block with a specified new license comment block in each source file. - Delete an existing license comment block from each source file. It is written in Java and will run on any OS that has Java is installed.
    Downloads: 0 This Week
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  • 15

    BuildMagic

    Easy to use templating capabilities to ant + various build tasks

    Provides an easy to use templating capability to ant (build-by-convention a la maven)
    Downloads: 0 This Week
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  • 16
    CSBB-v3.0

    CSBB-v3.0

    CSBB - Computational Suite for Bioinformaticians and Biologists

    CSBB is a command line-based bioinformatics suite to analyze biological data acquired through varied avenues of biological experiments. CSBB is implemented in Perl, while it also leverages the use of R, java, python and ruby in background for specific modules. Major focus of CSBB is to allow users from biology and bioinformatics community, to get benefited by performing down-stream analysis tasks while eliminating the need to write programming code. CSBB is currently available on Linux, UNIX. Currently CSBB provides 18 modules focused on analytical tasks like performing upper-quantile normalization, interactive visualization and next generation sequencing pipelines. CSBB now also has capability to process public data. Providing User with End to End pipeline experience.
    Downloads: 0 This Week
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  • 17
    ChatGPT Java API

    ChatGPT Java API

    Java SDK for seamless integration with ChatGPT APIs

    ChatGPT-Java is a Java SDK created by PlexPt that offers a convenient, out-of-the-box integration with the OpenAI ChatGPT API (including models like GPT-4o, GPT-5) for Java applications. The library supports chat completions, token counting, function calls, streaming responses, proxy configuration, custom API host, and integration with frameworks such as Spring (via SseEmitter). It abstracts the HTTP interaction and JSON parsing into simple Java objects and builders while handling details like token usage and model selection. It is published to Maven Central under the group com.github.plexpt, e.g., version 5.0.1. The SDK is designed for developers building chatbots, conversational assistants, and integrations in Java or Spring ecosystems. Being open source under MIT, it provides transparency and community contributions.
    Downloads: 0 This Week
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  • 18
    Components 4 Java
    Components 4 Java is a development tool for Java. It provides a framework to organize different parts of code in loosely coupled components. Those will be sticked together graphically to larger compositions and distributed among Java Archives.
    Downloads: 0 This Week
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  • 19
    A gentoo derived netboot node and build system for use with Distcc (Distrubuted C Compiler) clusters.
    Downloads: 0 This Week
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  • 20

    EPICS-sumo

    A SUpport MOdule manager for EPICS

    sumo, the SUpport MOdule manager, is a set of tools to support software development for the EPICS framework. It manages build dependencies and consistent builds of the EPICS support modules.
    Downloads: 0 This Week
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  • 21

    GNAT Util Library

    Provides access to GNAT compiler internals for AdaCore utilities

    With GNAT GPL 2013, AdaCore have extracted internal compiler components into a library called gnat_util, which is used by (at least) ASIS and GNATColl. GNAT Util GPL 2013 contains components from the GNAT GPL 2013 compiler. At least for ASIS, the components used to build it must match the components in the compiler, so if building ASIS for use with (for example) FSF GCC 4.8.0 a version of GNAT Util is needed which contains components from FSF GCC 4.8.0. This project provides such a library. The code is released under GPL V3.0 without any Runtime Exception, because the compiler components are themselves pure GPL. NOTE: This library was written to support building Ada tools for Darwin (Mac OS X), and contains Darwin-specific choices.
    Downloads: 0 This Week
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  • 22

    GNU Build Packages for SCons

    Build GNU tools with SCons

    A package of scripts that allow you to use the SCons build tool to build software that usually uses the GNU Autotools.
    Downloads: 0 This Week
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  • 23
    Gobisoft

    Gobisoft

    Software auto-installation builder

    Gobisoft is a batch package builder for applications, it builds a self-install package of your programs. Creates a stand alone executable file that performs the (secured installation and removing) of the elements necessary to distribute your applications. The software offers many possibilities, such as executing commands before and after installation.
    Downloads: 0 This Week
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  • 24
    A GUI inspector for GObject Introspection Repository .gir file.
    Downloads: 0 This Week
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  • 25

    Infix: Maven tools

    Bunch of Apache Maven plug-ins and tools

    Infix is a group of Apache Maven plug-ins developed to aid in build and release management with Maven. It includes plug-ins to integrate NSIS and JSmooth with Maven.
    Downloads: 0 This Week
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