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.

  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 1
    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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    Downloads: 13,631 This Week
    Last Update:
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  • 2
    NSIS: Nullsoft Scriptable Install System

    NSIS: Nullsoft Scriptable Install System

    Windows installer development tool

    NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.
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    Downloads: 10,132 This Week
    Last Update:
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  • 3
    CLISP - an ANSI Common Lisp
    CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
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    Downloads: 475 This Week
    Last Update:
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  • 4
    Windows port of Glade 3. The latest version includes a stand-alone installer with bundled GTK+ 2.16.0 and libxml 2.7.3. Extra installers or zip files are not required. No changes to the Glade source were required to compile under mingw.
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    Downloads: 160 This Week
    Last Update:
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  • 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
  • 5
    Ultra-Modern UI

    Ultra-Modern UI

    The Ultra-Modern User Interface is an new interface for NSIS 3 x86

    The UltraModern User Interface is a new interface with a style like the most recent installers for NSIS 3 (Nullsoft Scriptable Install System) x86 edition, the tool that allows programmers to create such installers for Windows.
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    Downloads: 42 This Week
    Last Update:
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  • 6
    Oblivion Works
    Wrye Bash has moved to Github! Downloads: https://github.com/wrye-bash/wrye-bash/releases Code: https://github.com/wrye-bash/wrye-bash
    Downloads: 16 This Week
    Last Update:
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  • 7
    Compiere ERP + CRM Business Solution
    Compiere ERP+CRM is the leading open source ERP solution for Distribution, Retail, Manufacturing and Service industries. Compiere automates accounting, supply chain, inventory and sales orders. Compiere ERP is distributed under GPL V2 by Compiere, Inc.
    Downloads: 4 This Week
    Last Update:
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  • 8
    JavaGuard is a general purpose bytecode obfuscator, designed to fit effortlessly into your regular build and testing process, providing peace of mind that your valuable Java code is more secure against decompilation and other forms of reverse engineering
    Downloads: 5 This Week
    Last Update:
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  • 9
    NSBase

    NSBase

    NSBase is a database management system.

    NSBase is a database management system. NSBase use SQLite, Firefird, Interbase, MariaDB, Mysql, Postgresql, Sybase It allows to quickly build complete database applications. Its modern interface is simple and ergonomic. Its scripting in LUA makes it possible to dynamize your applications. It is a rapid development workshop (IDE / RAD) visual type (sqlite form generator). It is a real alternative to MSAccess, kexi and other. Import your database : Text files, MS Access (MDB File), SQLite and Kexi Build your applications quickly, thanks to integrated wizards It can create stand-alone applications without specific installation, it generates an exe file under windows quickly and easily (or the equivalent under linux)
    Downloads: 16 This Week
    Last Update:
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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
  • 10

    ASLoader

    Arduino upload tool

    This little Java tool allows you to upload a compiled sketch to your Arduino without using the IDE. Currently the protocols Stk500v1, Stk500v2, Avr109 and SAM-BA are implemented. That means the * Arduino Due, * Arduino Duemilanove, * Arduino Leonardo, * Arduino Leonardo ETH, * Arduino Mega, * Arduino Micro, * Arduino Nano, * Arduino Pro Mini, * Arduino Uno and maybe some others are supported.
    Downloads: 9 This Week
    Last Update:
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  • 11
    BVRDE

    BVRDE

    A fully integrated development environment (IDE) for remote cross-pla

    The BVRDE is a fully integrated development environment (IDE) for remote cross-platform compiling and debugging of UNIX and LINUX console applications. BVRDE runs on a Windows platform, but compiles and debugs applications on UNIX systems.
    Downloads: 2 This Week
    Last Update:
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  • 12
    PHP Report Generator generates PDF-files from an result set of an SQL Statement. The description of the report is stored in a SQL Table. The project consists of the printing machine and an HTML front end, to create a report definition.
    Downloads: 4 This Week
    Last Update:
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  • 13
    CDK4AVR stands for Cross Development Kit for Atmels AVR RISC processor serie and should you support with a comprehensive Assembler and C development environment for even this processor familie under Linux or similar host systems.
    Downloads: 2 This Week
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  • 14
    The script helps commiting changes on several branches in CVS by creating a bunch of CVS commands which the user normally would have to create himself.
    Downloads: 3 This Week
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  • 15
    gtgt (Gnu-Template-Generation-Tools) are scripts to create a sophisticated teaching "hello world" written in C or C++: you can see how to use modules/classes static and shared libraries, all being documented by doxygen + fully embedded into GNU automak
    Downloads: 3 This Week
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  • 16
    wx.NET is a C# wrapper for wxWidgets (www.wxwidgets.org), providing a portable GUI toolkit for .NET programs. Supported on Windows, Linux GTK, and Mac OS X using MS.NET or Mono. Visit wxnet.sf.net or click "Project Home Page" below to learn more.
    Downloads: 1 This Week
    Last Update:
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  • 17
    1337writer is a converter for 'normal' text to 1337 / l33t text (leetspeech). simply input your text and the programm will output the 1337 version. (hardcore 1337 or simple 1337).
    Downloads: 1 This Week
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  • 18
    Aloys Core Framework is a framework for Internet applications written in PHP/SQL (including mySQL). AloysCore gives all classes for dispatching modules calls, manage various environment variables, deal with multilingual texts, and access various datasour
    Downloads: 1 This Week
    Last Update:
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  • 19
    The "Business to Business Operating System" is a set of Java-based modules for providing auctions, catalogs, directories as an open-source alternative to B2B E-Marketplaces. The "operating system" aspect relates to the resource allocation capability.
    Downloads: 1 This Week
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  • 20
    Clirr is a tool that checks Java libraries for binary and source compatibility with older releases. The Clirr Ant task can break the build if it detects incompatible api changes, making it easy to prevent accidental introduction of compatibiliy issues.
    Downloads: 1 This Week
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  • 21
    Greebo is an Ant task for making developer's life easier by downloading and managing non-source dependency files from a (possibly networked) source, to a specified local repository, much like Maven.
    Downloads: 1 This Week
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  • 22
    JAPI is a collection of Java libraries that help with various tasks like argument parsing, i18n/l10n, creating gui applications, as well as tools that demonstrate this.
    Downloads: 1 This Week
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  • 23
    Voyager JBoss OpenTool is an OT for JBuilder 6 Enterprise Edition. It integrates the JBoss application server the same way other application server are already integrated. Development and support was stopped since JBuilderX comes with JBoss support now.
    Downloads: 1 This Week
    Last Update:
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  • 24
    JPA-XJC is a JAXB 2.1 XJC plugin for annotating schema derived classes with Java persistence annotations. It does not generate code depending on libraries other than JPA 1.0 and does not introduce non-standard customization elements.
    Downloads: 1 This Week
    Last Update:
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  • 25
    The "WebNavigationFramework" (WNF) is a Environment to create or build Websites and/or Webappls it knows Sessions for SingleSignOn and functions for expanding.Nav.-nodes are User-, Date- and/or Locationspecific and hierarchically.
    Downloads: 1 This Week
    Last Update:
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