Windows Softwares to Extensible by Plugins/Extensions

Komodo Edit is a powerful yet lightweight text editor specifically designed for dynamic programming languages. It offers a comprehensive suite of features for developers working with languages like Python, PHP, JavaScript, and Perl, providing smart editing tools, a customizable interface, and extensibility through plugins.

Code::Blocks is a powerful, free, open-source integrated development environment (IDE) designed for C, C++, and Fortran programming. It offers extensive features for coding, debugging, and building applications across multiple operating systems, catering to both beginners and experienced developers.

Pale Moon is an open-source web browser meticulously crafted for efficiency, ease of use, and customization, built on an independently developed Goanna engine. It provides a traditional browser experience while prioritizing user control and privacy over modern trends like mandatory cloud features and restrictive extension policies.

Miranda IM is a lightweight, open-source, multi-protocol instant messaging client designed specifically for Microsoft Windows. Known for its extensibility and resource efficiency, it allows users to connect to various chat networks simultaneously through a flexible plugin-based architecture.

Jitsi is a free and open-source suite of secure, flexible communication tools. It offers multi-platform support for voice (VoIP), video conferencing, and instant messaging, emphasizing privacy and ease of use with no account required to start a meeting.

Maxthon Cloud Browser is a freeware web browser known for its dual rendering engine (Trident and WebKit) and cloud synchronization capabilities, offering a feature-rich browsing experience with built-in tools like ad blocking, download management, and gesture support.

KDE Plasma is a powerful, versatile, and customizable graphical desktop environment designed for Linux and other Unix-like systems. It offers a modern interface, extensive configuration options, and a wide range of included applications, aiming to provide a user-friendly yet highly flexible computing experience.

IntelliJ IDEA is a powerful Integrated Development Environment (IDE) designed primarily for Java programming, but also supporting a wide range of other languages and frameworks. Renowned for its intelligent code assistance, developer-friendly features, and robust tooling, it accelerates development workflows and improves code quality.

Mailbird is a powerful and intuitive desktop email client for Windows, designed to streamline your email workflow and centralize your digital communication with a clean interface and built-in app integrations.

MusicBrainz Picard is a leading open-source music tagger that identifies and organizes your digital music collection using acoustic fingerprints and comprehensive metadata from the MusicBrainz database. It offers powerful features like automatic tagging, file renaming, and plugin support to keep your music library clean and accurate.

GNU Emacs is a highly extensible and customizable text editor, renowed for its powerful features and ability to serve as a complete development environment. It is based on the Emacs Lisp programming language, allowing for deep customization and a vast ecosystem of packages.

KVIrc is a versatile and highly customizable graphical IRC client available for Linux, Unix, macOS, and Windows. It is designed to cater to both seasoned IRC users seeking advanced control and newcomers looking for a user-friendly interface to connect to various IRC networks.

NINJA-IDE is a free and open-source, cross-platform integrated development environment specifically designed for Python development. It offers a range of features to improve productivity, including syntax highlighting, code completion, debugging tools, and a built-in terminal. Its extensible architecture allows for customization through plugins and themes.

Zend Studio is a comprehensive Integrated Development Environment (IDE) specifically designed for professional PHP developers. It offers a rich set of tools to streamline the development lifecycle for web and mobile applications.

Edraw Max is a powerful, all-in-one diagramming software for creating professional diagrams, charts, floor plans, network diagrams, and much more. It offers a vast library of templates and symbols for various industries, facilitating efficient visual communication and project planning for individuals and teams.

Redmine is a robust and flexible open-source project management web application designed to help teams manage projects, track issues, and collaborate effectively. It offers a wide range of features, including multi-project support, Gantt charts, time tracking, and extensive customization options through plugins and themes.

Brackets is a modern, open-source code editor specifically designed for web development. Built with HTML, CSS, and JavaScript, it prioritizes a streamlined workflow with its innovative features like Live Preview and inline editors, making front-end development more intuitive and efficient.

Open Broadcaster Software (OBS Studio) is a free and open-source cross-platform streaming and recording program. It allows users to capture video from multiple sources, mix audio, create custom overlays, and stream live to platforms like Twitch, YouTube, and Facebook, or record locally for later use.

MusicBee is a powerful yet easy-to-use freeware music player and organizer for Windows, designed to manage large collections, automatically tag files, synchronize with devices, and play your audio with high fidelity.

LibreOffice Calc is a powerful and free spreadsheet application, part of the LibreOffice suite. It offers extensive functionality for creating, editing, and managing spreadsheets, including complex calculations, data analysis, charting, and compatibility with various file formats, including Microsoft Excel.

XnView is a versatile and free multimedia viewer, browser, and converter that supports over 500 image formats. It offers powerful batch processing capabilities for tasks like conversion, renaming, and resizing, making it an essential tool for managing large photo collections.

SketchUp is a powerful 3D modeling software widely used for architectural design, interior design, mechanical engineering, and more. It offers an intuitive interface and a vast library of pre-made models, making it accessible for both beginners and professionals.

Iridium Browser is a security-focused web browser built upon the Chromium codebase. It prioritizes user privacy by significantly reducing data transmission to Google and other servers, while incorporating enhanced security features and utilizing the latest secure technologies for a safer browsing experience.

ReText is a straightforward yet effective text editor designed primarily for authoring documents in Markdown and reStructuredText. It provides essential features like live preview and syntax highlighting, making it a suitable choice for writers and developers who prefer lightweight, plain text formats.

Deluge is a free, open-source BitTorrent client offering a lightweight and cross-platform solution for downloading and sharing files. Known for its extensibility through plugins, it provides users with a customizable and efficient torrenting experience.

Launchy is a discontinued yet highly efficient open-source keystroke application launcher for Windows, macOS, and Linux. It allows users to quickly open programs, documents, and perform searches by typing their names, significantly speeding up workflow.

Atom is a highly customizable and extensible open-source text editor developed by GitHub. Built on Electron, it provides a modern, hackable platform for developers, offering robust features like syntax highlighting, Git integration, and a vast ecosystem of packages to enhance productivity and tailor the editing experience to individual needs.

NetBeans is a free and open-source Integrated Development Environment (IDE) specifically designed for enterprise-level Java development, supporting a wide array of other languages and technologies, including PHP, C++, JavaScript, HTML, and CSS. It provides comprehensive tools for coding, debugging, testing, and deploying applications.

Microsoft Visual Studio is a comprehensive Integrated Development Environment (IDE) designed for building a wide range of applications across various platforms. It provides a rich set of tools for coding, debugging, testing, and deploying software.

Blender is a comprehensive, free, and open-source 3D creation suite supporting the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, video editing, and 2D animation pipeline.