Open Source Software Development Software

Browse free open source Software Development software and projects below. Use the toggles on the left to filter open source Software Development software 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.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 1
    TortoiseSVN

    TortoiseSVN

    An Apache SVN client, right where you need it most

    TortoiseSVN is a Subversion (SVN) client, implemented as a windows shell extension. Which means it's available right where you need it: in the Windows file explorer. It's intuitive and easy to use, since it doesn't require the Subversion command line client to run. Simply the coolest Interface to (Sub)Version Control!
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    Downloads: 42,346 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: 7,853 This Week
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  • 3
    KDiff3

    KDiff3

    A graphical text difference analyzer

    This repository is no longer maintained and is kept for archival purposes. See https://invent.kde.org/sdk/kdiff3 for the newest code and https://download.kde.org/stable/kdiff3/ for release bundles. All bugs should be filed at bugs.kde.org. KDiff3 is a graphical text difference analyzer for up to 3 input files, provides character-by-character analysis and a text merge tool with integrated editor. It can also compare and merge directories. Platform-independant.
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    Downloads: 2,360 This Week
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  • 4
    SharpDevelop

    SharpDevelop

    A free IDE for C#, VB.NET, & Boo projects on Microsoft's .NET platform

    SharpDevelop is the open-source IDE for the .NET platform. Write applications in languages including C#, VB.NET, F#, IronPython and IronRuby, as well as target rich and reach: Windows Forms or WPF, as well as ASP.NET MVC and WCF. It starts from USB drives, supports read-only projects, comes with integrated unit and performance testing tools, Git, NuGet and a lot more features that make you productive as a developer.
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    Downloads: 520 This Week
    Last Update:
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
    Learn More
  • 5
    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: 245 This Week
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  • 6
    Pootle, Virtaal & Translate Toolkit

    Pootle, Virtaal & Translate Toolkit

    Localization tools built by localizers for localizers

    Tools for localization: - Pootle: web based translation management system. - Virtaal: Computer Aided Translation (CAT) tool. - Translate Toolkit: QA, format conversion and support (PO, Java .properties, OpenOffice, Mozilla, XLIFF, TMX, TBX, CSV, Qt .ts).
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    Downloads: 121 This Week
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  • 7
    PHPFusion

    PHPFusion

    Award-winning lightweight Open Source Content Management System (CMS)

    PHPFusion is an award-winning open source content management system (CMS). PHPFusion is written in PHP and MySQL and includes a simple, comprehensive administration system. Demos : https://demos.php-fusion.co.uk/
    Downloads: 82 This Week
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  • 8
    Gambas
    A Graphical Developement Environment based on a Basic Interpreter with object extensions.
    Downloads: 32 This Week
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  • 9
    XOOPS Web Application System

    XOOPS Web Application System

    The world's leading content management systems (CMS) written in PHP

    PLEASE NOTE: Latest XOOPS files are on http://github.com/xoops and http://github.com/xoopsmodules25x) XOOPS is a Web application platform written in PHP for the MySQL database. Its object orientation makes it an ideal tool for developing small or large community websites, intra-company and corporate portals, weblogs, and much more. XOOPS is an acronym of eXtensible Object Oriented Portal System. Initially a portal system, XOOPS is now a leading content management system (CMS) that serves as a versatile Web framework. XOOPS can also be used as a weblog or journal via a standard install using the News module alone. Another approach is to use modules like News, Forum, Download, Web Links, etc. to form a community that interacts with members and visitors. Or think big, like an enterprise, and develop modules to use with eShop that integrate into XOOP's uniform user management system. XOOPS is released under the terms of the GNU General Public License (GPL)
    Downloads: 35 This Week
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  • Get the most trusted enterprise browser Icon
    Get the most trusted enterprise browser

    Advanced built-in security helps IT prevent breaches before they happen

    Defend against security incidents with Chrome Enterprise. Create customizable controls, manage extensions and set proactive alerts to keep your data and employees protected without slowing down productivity.
    Download Chrome
  • 10
    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: 14 This Week
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  • 11
    Avocado programming language

    Avocado programming language

    Avocado Polish programming language

    The Avocado language is compiled and currently allows for the creation of console applications. Work on Avocado and the integrated development environment (IDE) began on February 19, 2025. A unique feature of this language is the ability to write commands in Polish and English, compiling code into .exe format. The language is freely available for commercial and non-commercial projects. The Avocado source code is available under the MIT License on GitHub. Avocado is transpiled to Free Pascal and then compiled by the FPC compiler, making it as fast as C or Rust, but with syntax reminiscent of Python. The Avocado IDE interface has been translated into 30 languages Official website: https://avocado.dimitalart.pl/ Documentation: https://avocado.doc.dimitalart.pl/ Source code https://github.com/Programista-Art/Avocado 🥑 Hey! If you like my programming language Avocado, support the project on Patronite 👉 https://patronite.pl/programista-art Every bit of support means a lot.
    Downloads: 18 This Week
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  • 12
    Notepad++

    Notepad++

    Notepad++ project is moving to GitHub:

    Notepad++ project is moving to GitHub: https://github.com/notepad-plus-plus/notepad-plus-plus
    Downloads: 0 This Week
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  • 13
    If you have many documents those written in several type such as pdf, chm, doc, html... How can you fast search their contents concurrently? Rebook software solves that problems. How can you get differences things between them? Rebook software supports that problems. How can you get similar things between them? Rebook software supports that problems. While you are typing a document/text, how can you fast reference the give contents in your documents? Use Rebooks software, it is called suggestion feature. How can you easy managed your document/file? Rebook software supports that problems. Rebooks search out your "text quotes" from your documents.
    Downloads: 0 This Week
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  • 14
    TRIAD is a browser-independent and platform-independent framework for Rich Internet Aplications.
    Downloads: 0 This Week
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  • 15
    Sight provides a friendly interface to create and connect agents for bioinformatics. The workflow supports multiple responses to a single request, structure transforms, filters and request history access.Can talk with ordinary http servers (get and post)
    Downloads: 0 This Week
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  • 16
    ehandwriting

    ehandwriting

    Groundbreaking JS plug&play writes real handwriting on your web page.

    New and totally free handwriting software can write what you want, where you want, when you want on your web page in real time. The software is Vanilla JS only - no frameworks, CSS, images, svg, or video used or required. It's totally pure JS. It's for commercial, social media, and educational use. Creative web developers and designers have a new simple to use tool. The text on a web page usually has a few key words - the creative web developer will consider having one or more of them written dynamically in real time. Users are inevitably drawn to the hand that's writing. One line of code loads the plugin then any number of calls to it causes writing to happen when required. Typically the writing will occur in an element (a div, say) or a chosen area of the window. The software auto deals with font size and spacing. DOWNLOAD ehandwriting.zip (284kb) includes: - Executable software "ehw 1.1 min.js" (132kb) - All source files + documentation, - User guides - MIT Licence
    Downloads: 0 This Week
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  • 17
    Localization of python-2.6 to lithuanian and russian from source of chinese python
    Downloads: 0 This Week
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  • 18
    A java-based auto-update module. Generated updates are transferred in archives, upgrading between subsequent versions. An update contains changed single files and changed part of jars's and zip's. Mirrors, release notes, update uninstallation, news.
    Downloads: 0 This Week
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