Mac OS X Softwares to Extensible by Plugins/Extensions

GIMP (GNU Image Manipulation Program) is a powerful, free, and open-source raster graphics editor used for image manipulation, retouching, composition, and authoring. It supports a vast array of file formats and provides sophisticated tools comparable to commercial alternatives, making it a versatile choice for photographers, designers, and artists.

Google Chrome is a widely adopted, multi-platform web browser known for its speed, extensive extension library, and seamless integration with Google services. Leveraging the powerful Blink engine, it provides a fast and secure browsing experience for individuals and businesses alike.

Mozilla Firefox is a powerful, open-source web browser developed by the not-for-profit Mozilla Foundation. Known for its strong focus on user privacy and customization, Firefox offers a fast and secure browsing experience across multiple platforms, supported by a vast ecosystem of extensions.

Flux is a powerful and versatile web design environment crafted for professional web developers and designers. It offers a unique blend of a WYSIWYG editor and robust code control, making it suitable for both visual design and direct code manipulation. With support for modern web standards like HTML5, CSS, and JavaScript, alongside features like Bootstrap integration and a built-in file manager, Flux provides a comprehensive toolkit for building responsive and dynamic websites.

Pimcore is an open-source data and experience management platform that integrates Product Information Management (PIM), Digital Asset Management (DAM), Customer Data Platform (CDP), and Web Content Management (WCM). It enables businesses to centralize, manage, and deliver digital data across various channels, facilitating rich customer experiences and streamlined e-commerce operations.

Eric is a powerful, feature-rich integrated development environment (IDE) primarily designed for Python and Ruby development. Written in Python, it offers extensive capabilities for code editing, debugging, project management, and more, making it suitable for developers of all levels.

Gimp Painter is a discontinued fork of GIMP specifically enhanced with tools for digital painting and drawing. It aimed to provide artists with advanced brush capabilities and performance optimizations tailored for creative workflows on the GIMP platform.

Nevron Draw is a comprehensive diagramming software designed to help users create professional-looking diagrams, flowcharts, floor plans, and more. It offers a rich feature set, collaborative capabilities, and extensive export options for various diagramming needs.

Lessons Learned Server (LLS) is a lightweight, web-based platform designed for creating and managing hierarchical knowledge bases. It enables users to store and organize textual information, documents, and multimedia content efficiently, making it ideal for documentation, collaborative note-taking, and internal knowledge sharing.

CotEditor is a free and open-source text editor designed specifically for macOS. It offers a clean and intuitive interface, making it a lightweight yet powerful tool for plain text editing, coding, and more.

Coccinella is a free and open-source, cross-platform XMPP/Jabber client. It offers secure instant messaging, group chat, voice chat, and a unique interactive whiteboard feature. Designed with privacy and security in mind, Coccinella provides encrypted communications and supports various communication protocols for a flexible messaging experience on Windows, macOS, and Linux.

IP.Board, now part of the IPS Community Suite, is a robust, feature-rich platform for building and managing online communities. It offers a comprehensive set of tools for forums, content management, e-commerce integration, and more, catering to diverse community needs.

Hudson is an extensively customizable continuous integration server that automates the build, test, and deployment of software projects. Designed for on-premises or private cloud deployment, it supports distributed builds and offers a rich plugin ecosystem for broad technology compatibility.

010 Editor is a powerful text and hex editor designed for opening and editing challenging files and disk drives. It supports advanced binary template technology for parsing and analyzing file formats, making it an essential tool for reverse engineering, data recovery, and software development.

LazPaint is a lightweight, portable raster image editor designed for simplicity while offering essential features like layers and various photo effects. It aims to be an accessible alternative to more complex software, making image editing approachable for users seeking a less overwhelming experience.

Hugo is a lightning-fast static site generator written in Go. It's designed for building websites rapidly, offering a flexible templating system, theme support, and a built-in development server for quick previews. Ideal for blogs, portfolios, and documentation sites.

vBulletin is a widely recognized, robust forum software platform built on a foundation of PHP and MySQL, enabling the creation and management of dynamic online communities and websites with extensive customization options.

wxMEdit is a versatile cross-platform text and hex editor, serving as a powerful alternative to the discontinued MadEdit. Built on C++ and wxWidgets, it provides developers and advanced users with robust features for editing text files and binary data.

FluxBB is a lightweight, open-source bulletin board system designed for simplicity, speed, and low resource usage. It offers core forum functionalities with a focus on performance and ease of use, distinguishing itself from more feature-heavy alternatives.

CLion is a powerful, cross-platform Integrated Development Environment (IDE) meticulously crafted for C and C++ development. Offering intelligent code assistance, integrated debugging, and robust build system support, it streamlines the development workflow across various operating systems, making it a top choice for professional C/C++ developers.

Buildbot is an open-source framework for automating the build, test, and release process of software projects. It operates as a job scheduling system, orchestrating various tasks based on code changes and other triggers.

OneSwarm was a file-sharing client focused on privacy and anonymity, designed to operate within a darknet or a friend-to-friend network.

MyBB (MyBulletinBoard) is a free, open-source forum platform written in PHP and utilizing MySQL. It provides a robust and extensible solution for building online communities, offering features like integrated spam protection, user management, and a plugin system for customization.

ArchiCAD is a powerful BIM software suite designed for architects, engineers, and construction professionals. It facilitates comprehensive building information modeling, design, and documentation workflows for projects of all scales on both Windows and macOS platforms.

Visual Paradigm is a comprehensive modeling and design tool for software development, enterprise architecture, and business process analysis. It supports a wide range of diagramming notations including UML, BPMN, ERD, and more, facilitating code generation, reverse engineering, and team collaboration.

Adobe Bridge is a powerful digital asset management application that helps you organize, browse, locate, and preview your creative assets quickly and efficiently. It is a complete solution for managing photos, videos, and other media files, offering robust features for metadata management, batch processing, and seamless integration with other Adobe Creative Cloud applications.

Mylio helps you organize, protect, and access your photos and videos across all your devices without relying solely on cloud storage. It leverages a unique approach to keep your entire library synchronized and accessible, offering powerful organization, editing, and sharing tools.

WeeChat is a highly customizable, free and open-source command-line based chat client. Designed for efficiency and portability, it supports multiple protocols including IRC and XMPP, making it a versatile tool for connecting to various networks.

Textadept is a powerful, free, and open-source text editor designed for programmers. Focusing on speed and extensibility, it offers a minimalist interface while providing robust features like syntax highlighting, code formatting, and a built-in terminal, all heavily customizable through Lua scripting.

OpenProject is a powerful, web-based open-source project management software designed for teams of all sizes. It offers comprehensive tools for managing projects, tasks, teams, and communication in one centralized platform. Ideal for organizations prioritizing collaboration, flexibility, and data control.