Websites to Extensible by Plugins/Extensions

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.

Kloxo (Lxadmin) was a free and open-source web hosting control panel designed for managing servers and hosted services on Red Hat and CentOS Linux distributions. Although discontinued, it offered a comprehensive suite of tools for server administration, domain management, email services, and more, primarily targeting shared and dedicated hosting environments.

Awesome HQ is a personalized dashboard and start page solution designed to consolidate your digital life. It offers a highly customizable interface to access your favorite apps, bookmarks, widgets, and information streams from a single, central hub.

Vexor.io is a robust cloud-based continuous integration service empowering development teams to automate their build, test, and deployment processes. It offers flexible configurations and supports various languages and frameworks, streamlining the path from code commit to production.

Form Tools is a powerful, open-source PHP/MySQL form data management script designed for developers and businesses. It seamlessly integrates with existing web forms to capture, organize, and manage submissions through a user-friendly interface, offering extensive customization and extensibility.

CircleCI is a leading continuous integration and continuous delivery (CI/CD) platform that automates the software development process, accelerating build, test, and deployment cycles. It provides developers with the tools to build, test, and deploy applications quickly and reliably across various environments.

ProcessMaker is a leading open-source digital process automation platform designed to streamline workflow and business process management.

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.

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.

Planship is a versatile project and task management platform designed to streamline team collaboration and increase visibility. It offers a robust set of features for organizing tasks, tracking progress, and managing projects of varying complexities, making it ideal for teams of all sizes seeking improved efficiency and workflow management.

Vanilla is a versatile, open-source forum software built on PHP, designed for creating vibrant online communities. It offers a balance of ease of use and powerful customization options.

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.

bbPress is a highly focused, minimalist forum software designed for seamless integration with WordPress websites. Developed by the creators of WordPress, it prioritizes speed and simplicity.

Smartsheet is a dynamic work management platform empowering teams to plan, track, and execute projects efficiently. It combines powerful features like project management, task management, collaboration tools, and automated workflows in a user-friendly, web-based interface.

Futuramo Visual Tickets is a revolutionary project communication and issue tracking tool that transforms bug tracking, request management, and feedback gathering into a visual and collaborative process. It streamlines team workflows and enhances communication by enabling users to report issues directly on screenshots.

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.

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.

Confluence is a powerful team collaboration and knowledge management tool that helps teams create, organize, and discuss work effectively. It provides a central space for documentation, project planning, and team communication, making it easier for teams to stay connected and informed.

Redaxscript is an exceptionally lightweight and high-performance Content Management System designed for simplicity and speed.

PlantUML is an open-source tool that allows users to generate a wide variety of UML and other diagram types from a simple human-readable text description. It supports sequences, use case, class, activity, component, state, object, deployment, timing diagrams, and more, making it accessible and efficient for technical documentation and visualization.

MOOVIA is a comprehensive project and team management platform designed to foster a secure and enjoyable social environment for collaboration, task management, document sharing, and internal communication.

Kanboard is a free and open-source Kanban project management software that streamlines task and project workflows. It offers a minimalist and visual approach to managing tasks, making it ideal for teams seeking simplicity and efficiency in their collaboration efforts.

Discourse is a modern, open-source discussion platform designed for building thriving online communities. It combines elements of traditional forums, mailing lists, and chat to foster civil and engaging conversations.

Wekan is a free and open-source Kanban board application designed for collaborative task management. Based on the principles of Kanban, it offers a visual way to organize work, track progress, and improve workflow efficiency for individuals and teams.

concrete5 is a powerful open-source Content Management System (CMS) known for its ease of use, featuring in-context editing and a flexible architecture. It enables users to build and manage websites and web applications with minimal technical expertise.

cPanel is a leading web hosting control panel designed for Linux servers. It simplifies server management and website hosting through an intuitive graphical interface, offering comprehensive tools for file management, email, databases, domains, and security.

Cloud9 IDE is a powerful online integrated development environment that provides a fully featured workspace accessible directly from your web browser. It supports a wide range of programming languages and frameworks, offering built-in debugging, terminal access, and collaborative features.

Pivotal Tracker is a powerful agile project management tool designed for software development teams. It simplifies the process of planning, tracking, and collaborating on projects, offering a clear visual workflow and focus on iterative delivery.

muCommander is a versatile, open-source file manager designed for productivity across various operating systems. It offers a dual-pane interface for efficient file operations, built-in support for network protocols like FTP and SSH, and extensive customization options, making it a powerful tool for both casual users and power users who need advanced file management capabilities.

Trac is a mature open-source, web-based project management and bug tracking system. It integrates closely with version control systems and provides a wiki for documentation, making it a comprehensive tool for software development teams.