Apps to Customizable Interface

Songbird was a feature-rich, open-source media player and web browser aimed at music enthusiasts. It offered a unique blend of music discovery, management, and playback functionalities, with extensive customization options through add-ons. Key features included music library management, playlist creation, syncing capabilities for various devices, and integrated web browsing for exploring music-related content.

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.

VLC Media Player is a free and open-source cross-platform multimedia player that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols. Known for its robust format support and stability, VLC is a favorite for playing virtually any media file without the need for external codecs.

Calligra Stage, formerly known as KPresenter, is a free and open-source presentation software designed for creating compelling slideshows with a focus on flexibility and compatibility.

FCorp Lyric Library is a comprehensive tool for managing your music library and lyrics. It offers automatic lyric finding, supports portable use, and includes features like music discovery and karaoke-style viewing.

Noise is a sleek and efficient GTK3 audio player designed for managing and enjoying your music library. It prioritizes speed and a clean interface, offering essential features for music enthusiasts who value performance and simplicity.

Cloud Surfing is a comprehensive platform aggregating information, reviews, and details about Web 2.0 applications, tools, and services. It serves as a centralized resource for discovering, evaluating, and understanding the landscape of online tools.

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.

Bez is a powerful and intuitive vector graphics editor designed specifically for the iPad. It empowers users to create precise and beautiful vector art, logos, illustrations, and UI designs directly on their tablet.

Swinsian is a powerful and lightweight music player and organizer designed exclusively for macOS. It handles a wide range of audio formats, offers advanced tagging capabilities, duplicate file finding, and seamless integration with features like Last.fm and iTunes libraries, providing a sophisticated and efficient music management solution.

Lumina Desktop Environment is a lightweight and highly customizable desktop environment focused on performance and user control. It's designed to be simple, efficient, and extensible through plugins, offering a seamless experience primarily on BSD operating systems but adaptable to others.

osu! is a vibrant, community-driven freeware rhythm game where players tap, drag, and spin to the beat of their favorite songs. With a massive library of user-created beatmaps and multiple gameplay modes, it offers a challenging and engaging experience for both casual players and competitive enthusiasts alike.

Scratch is a powerful yet lightweight text editor designed for developers and anyone working with code or plain text. It offers automatic saving, syntax highlighting, and a range of features to boost productivity, all within a customizable and extensible interface.

Griffith is a discontinued, but functional, media collection manager designed to help users catalog and organize their collections of movies, films, and other video media. It provides a database-driven approach to library management, allowing for detailed information tracking and categorization.

Filmotech is a comprehensive and versatile software solution designed for cataloging and managing personal movie collections across various physical and digital formats like DVD, Blu-Ray, and digital files. It offers robust features for organizing, tracking, and sharing your movie library.

Slim ROM is a highly customizable and lightweight custom Android operating system designed for enhanced performance and user control. It offers a clean, near-stock Android experience with numerous options for personalization, focusing on efficiency and privacy.

Microsoft Expression Encoder is a powerful, albeit discontinued, media encoding and basic non-linear video editing software for Windows. It offers a range of tools for video conversion, screen recording, live broadcasting, and batch processing, catering to both novice and professional video creators.

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.

Newsify is a comprehensive news, blog, and RSS reader designed for users who want a centralized platform for consuming content. It offers features like offline reading, integrated search, iCloud sync, and customizable options for a personalized reading experience.

Finch is a versatile, command-line based instant messaging client that leverages the Pidgin network libraries. It supports multiple protocols like AIM, Jabber, MSN, Yahoo!, IRC, and more, providing a text-only interface for users who prefer the efficiency and minimalism of the console environment.

Kadu is a free, open-source, multi-platform instant messaging client supporting Gadu-Gadu, XMPP, and related services like Google Talk, providing users with a versatile and extensible communication tool.

Mywebgrid is a comprehensive online platform designed to centralize and organize your digital life. Functioning primarily as a personalized homepage and feed aggregator, it allows users to curate content from various sources, manage bookmarks, track tasks, and integrate useful widgets for a streamlined online experience.

Denemo is a robust free software graphical user interface (GUI) designed for efficient music notation, primarily acting as a front-end for the powerful GNU LilyPond music engraver. It allows musicians and composers to create high-quality musical scores.

Qwant is a European-based search engine emphasizing user privacy. It prioritizes anonymity and does not track search history or personal data. Beyond standard web search, Qwant offers dedicated sections for news, images, videos, and a unique 'social' view, providing a different way to explore information online.

musikCube is a lightweight, partially open-source terminal-based audio player designed for managing and playing large music libraries efficiently. It offers advanced features like smart playlists, plugin support, and internet radio streaming.

Boxy SVG is a powerful and intuitive vector graphics editor designed for creating scalable vector graphics. It provides a user-friendly interface with a comprehensive set of tools for drawing, editing, and manipulating SVG files effectively. Ideal for web designers, illustrators, and graphic artists working with vector graphics.

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.

Open Atrium is a powerful open-source collaboration and project management platform built on Drupal. It provides a modular framework to create customized intranets, team sites, and project workspaces, facilitating communication, document sharing, task management, and more within organizations.

Geeqie is a blazingly fast and extremely customizable Gtk+ based image viewer designed for Unix-like operating systems. It excels at efficient photo browsing, organization, and basic editing, making it an ideal tool for photographers and anyone dealing with large image collections.

Path Finder reimagines the macOS file browsing experience, offering a powerful and highly customizable alternative to the default Finder. It provides a dual-pane interface, extensive file management tools, advanced search capabilities, and deep integration with macOS features for enhanced productivity.