Apps to Extensible by Plugins/Extensions

CodeLobster PHP Edition is a free, portable IDE designed for rapid development of PHP, HTML, CSS, and JavaScript web applications. It offers robust features like smart autocompletion, an integrated debugger, and a powerful set of tools for efficient coding and debugging.

Ex Falso is a robust, free, and open-source cross-platform audio tag editor designed for meticulous music library management. It provides powerful tools for editing metadata across various audio formats, ensuring your collection is organized, searchable, and consistent.

Icedove is a robust and adaptable open-source email client forked from Mozilla Thunderbird, offering comprehensive email management, RSS feed aggregation, integrated chat, and extensive customization options through extensions.

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.

Moovida, formerly Elisa, was an open-source, cross-platform media center designed to offer a visually appealing and intuitive interface for managing and playing multimedia content. Providing support for various media formats and streaming capabilities, it aimed to be a central hub for digital entertainment.

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.

Futuramo Time Tracker is a robust time tracking application designed to enhance productivity and manage work time effectively. It offers a suite of features for individuals and teams to monitor activities, analyze performance, and streamline time management processes.

Speed Dial is a versatile browser extension designed to replace your default new tab page with a highly customizable visual dashboard, offering quick access to frequently visited sites, bookmarks, and browsing history for enhanced navigation and productivity.

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.

Psi+ is a robust, cross-platform XMPP/Jabber client tailored for users who prioritize control, privacy, and extensibility. As a development branch of the classic Psi client, it offers advanced features for secure and customizable instant messaging.

ABBYY Lingvo Dictionaries for desktop and mobile devices provide powerful tools for language translation, vocabulary acquisition, and language mastering. Offering comprehensive dictionaries, contextual translations, and versatile search capabilities, Lingvo supports a multitude of languages for individuals and professionals.

rxvt-unicode, often abbreviated as urxvt, is a highly customizable and lightweight terminal emulator known for its performance and extensive feature set provided through plugins. It's a fork of the original rxvt and is a popular choice for users seeking a fast and highly configurable command-line interface.

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.

SynWrite is a comprehensive and free source code editor for Windows, serving as an excellent Notepad replacement with robust features for various programming and web development tasks. It's designed for performance and extendibility, making it suitable for both novice and experienced developers.

Scribes is a free and open-source minimalist text editor designed for programmers and writers who value simplicity and efficiency. It provides a clean interface with essential features like syntax highlighting, autocompletion, and extensibility through plugins, making it a lightweight yet powerful tool for various coding and writing tasks.

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.

FVD Speed Dial is a browser extension that transforms your new tab page into a visually appealing and highly functional speed dial. It allows users to organize bookmarks, synchronize data across devices, and customize their browsing experience with various themes and layouts.

qutIM is a free and open-source, multi-protocol instant messenger designed for connecting to various networks including ICQ, Jabber, Mail.Ru, IRC, and VKontakte. It offers a unified interface for managing multiple accounts and conversations.

ISPConfig is a robust, open-source hosting control panel for Linux, designed for service providers, resellers, and individuals. It simplifies the management of web servers, mail servers, DNS servers, and more, offering a comprehensive suite of tools via a user-friendly web interface.

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.

Portable-VirtualBox allows you to run virtual machines directly from a USB drive without requiring an installation on the host computer. It provides a convenient and portable way to access different operating systems and applications.

CKEditor is a powerful open-source WYSIWYG HTML editor designed to be embedded into web pages, providing developers with a robust solution for enabling rich text editing capabilities for their users. It transforms simple textareas into fully-featured content creation environments.

Xabber is a free and open-source XMPP (Jabber) client for Android. It provides secure and reliable instant messaging with support for various XMPP features, including encryption, group chat, and decentralized communication. Leveraging the open XMPP protocol, Xabber offers a privacy-friendly alternative to centralized messaging platforms.

ImageGlass is a lightweight, versatile image viewing application designed as a modern, fast, and user-friendly alternative to the default Windows Photo Viewer. It supports a wide range of image formats and offers essential viewing tools alongside advanced features through its extensible architecture.

VFront is a powerful and open-source web-based front-end for managing various relational databases including MySQL, PostgreSQL, SQLite, and MariaDB. It provides a user-friendly interface for performing database operations without needing command-line access.

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.