Apps to Customizable

Pure Data (Pd) is a widely-used graphical programming environment developed by Miller Puckette. It provides a visual interface for creating interactive computer music, multimedia works, and various forms of digital art through signal processing and event modeling.

Novius OS is a flexible, open-source content management system (CMS) designed for creating and managing websites, e-commerce stores, intranets, and more. Built on the robust FuelPHP framework, it offers a modular architecture and an intuitive interface for effective digital content management.

Bipio was a Node.js-based web automation framework enabling users to create 'bips' - automation workflows connecting various web services for tasks like file synchronization, API integration, and data processing. It offered customizable triggers, actions, and integrations to automate complex online activities.

Octopress is a robust, open-source framework built upon Jekyll, designed specifically for developers and tech-savvy users to create and deploy static blogs with ease and extensive customization options.

svg-edit is a free, open-source, web-based vector graphics editor that empowers users to create and manipulate Scalable Vector Graphics (SVG) images directly in their web browser without the need for any additional software installations. It's a versatile tool for designers, illustrators, and anyone needing to work with vector graphics for web development, print, or other applications.

Zathura is a highly customizable and efficient document viewer based on the Poppler rendering engine. It is designed with a minimal interface and focuses on keyboard-driven navigation, making it ideal for users who prefer a streamlined workflow and powerful keybindings.

Dillo is an exceptionally lightweight and fast web browser designed for resource-constrained systems. It prioritizes speed and efficiency, making it ideal for older computers, embedded devices, or users seeking fundamental web browsing without modern complexities.

Mnemosyne is an open-source, free flashcard software leveraging spaced repetition to optimize learning. It features a user-friendly interface and supports various content types, making it ideal for students and lifelong learners aiming to improve memorization efficiency across different subjects.

Open365 is a comprehensive, open-source productivity suite offering cloud storage, office applications, and communication tools. Built upon a foundation of open-source technologies like KDE, Seafile, and LibreOffice, it provides a robust alternative to proprietary solutions, emphasizing privacy and control.

Organon is a powerful extension for LibreOffice and OpenOffice designed for managing and organizing large writing projects, such as novels, dissertations, or complex documents. It provides a structured environment with tools for scene management, character tracking, outlining, and tagging, helping writers stay organized and focused.

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

KMail is a powerful and flexible email client tightly integrated with the Kontact personal information manager suite. Part of the KDE ecosystem, it offers robust features for managing your email, including strong encryption options, support for multiple protocols like IMAP, POP3, and Exchange, and seamless integration with other Kontact components like the calendar and address book.

ZScreen, also known as ShareX, is a powerful open-source screen capture and file sharing utility for Windows. It allows users to capture areas of their screen, annotate images, and automatically upload them to various online services. While officially discontinued under the 'ZScreen' name, the project lives on as ShareX.

Foobnix is a versatile and performant music player designed for Linux systems. It offers comprehensive support for a wide range of audio formats, including lossless options, and integrates seamlessly with popular online services like internet radio and Last.fm. Its lightweight design ensures smooth operation even on systems with limited resources.

C* Music Player (cmus) is a fast and powerful terminal-based music player for Unix-like systems. It's known for its lightweight footprint, extensive library management features, and highly configurable interface, making it a favorite among command-line enthusiasts.

Plop Boot Manager is a versatile, lightweight boot manager enabling users to boot various operating systems from different devices, including USB drives, even on older systems without native USB boot support. It's ideal for multi-booting scenarios and accessing recovery or live environments.

MPlayer OSX Extended is a lightweight and versatile video player for macOS, built upon the robust MPlayer engine. It offers excellent format compatibility, subtitle support, and a clean interface for a focused playback experience.

Tasque is a free and open-source task management application designed for simplicity and efficiency. It helps users organize tasks, manage to-do lists, and optionally track time.

Ghost Commander is a powerful and versatile dual-pane file manager for Android, offering advanced features like FTP, WebDAV, Box, and Dropbox support, root access, batch operations, and extensive customization options for efficient file management on mobile devices.

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.

MOC (Music On Console) is a lightweight and feature-rich command-line audio player for Linux/UNIX systems. Designed for efficiency and performance, it offers high-fidelity sound playback without resource overhead.

TYPO3 is a powerful, open-source Content Management System (CMS) built on PHP, catering primarily to enterprise-level websites, intranets, and complex publishing platforms. It offers extensive flexibility, scalability, and a robust architecture for managing vast amounts of digital content.

MComix is a robust and highly customizable image viewer, specifically optimized for reading comic books and manga. It offers exceptional performance with large files while maintaining a user-friendly interface. Its feature set extends beyond basic image viewing, providing tools for organization and enhanced reading.

Antergos was a user-friendly Linux distribution based on Arch Linux, designed to make the power and flexibility of Arch accessible to a broader audience. It offered a simple graphical installer and a choice of popular desktop environments, including GNOME, Cinnamon, MATE, KDE Plasma, and Xfce, aiming for a smooth out-of-the-box experience with the benefits of a rolling release model.

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.

MilkyTracker is a free, cross-platform music tracker inspired by FastTracker 2, designed for composing music in MOD and XM module formats. It's a powerful tool for creating chiptune, demoscene, and electronic music, offering precise control over sound and sequencing.

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.

Slax is a remarkably lightweight and modular Live Linux distribution designed for portability. It runs directly from a USB drive or CD without requiring installation, making it ideal for rescue tasks, temporary workstations, or running on older hardware. Its building block approach allows users to easily customize its features.

CMS Made Simple (CMSMS) is a robust, open-source Content Management System designed for developers and site owners seeking flexibility and control over their web presence. It provides a powerful web-based area for building, managing, and maintaining websites.

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.