Apps to Infinite hierarchical depth

ThinkComposer is a highly flexible visual modeling tool designed for users to create rich, structured diagrams based on their specific domain knowledge. It facilitates the organization and visualization of complex information through various diagram types and hierarchical structures, enabling deep understanding and effective communication of ideas.

Gruik is a powerful, free, and open-source note-taking service designed for users who value privacy, organization, and control over their data. Offering robust features like hierarchical organization, offline access, rich text formatting, and synchronization options, it provides a flexible platform for managing notes, ideas, and personal knowledge wikis.

MyTetra is a versatile, cross-platform information manager designed for collecting, organizing, and managing various types of data. It excels as a portable note-taking application, personal information manager, and notebook, offering a robust outliner and rich text editing capabilities.

Dynalist is an outliner and productivity tool designed to help users organize ideas, tasks, and information in highly structured, hierarchical lists. It leverages the power of outlining to break down complex subjects into manageable parts, facilitating everything from simple task management to large-scale project planning and knowledge organization.

Hackpad is a powerful web-based collaborative real-time text editor designed for teams. It facilitates simultaneous document editing, note-taking, and brainstorming, ensuring everyone stays in sync.

memit is a comprehensive information management tool designed for collecting, curating, and organizing web links and digital content. It offers robust features for clipping, research, collaboration, and storage, all within a privacy-focused environment.

Org-mode is a powerful and flexible mode for GNU Emacs, designed for note-taking, project planning, to-do list management, and authoring documents. It utilizes simple plain text files with intuitive markup.

Producteev is a robust task management software designed for teams to collaborate effectively and streamline workflows. It offers a centralized platform for organizing tasks, managing projects, and tracking progress, catering to various team sizes and complexities.

KeepNote is a versatile note-taking application designed for organizing information in a hierarchical structure. Available on Windows, Linux, and macOS X, it features robust organization tools, including a tree-like outline, wiki-like linking, and support for embedded files and images. Although discontinued, its local storage and rich features make it a compelling tool for detailed note-taking and research.

UV Outliner is a discontinued, single-pane outliner known for its hierarchical structure and multicolumn support. It aimed to provide a flexible platform for note-taking, task management, novel writing, and brainstorming through a clean design and various integration options.

OpenNote is a free and open-source web-based note-taking application designed as an alternative to commercial offerings like OneNote and Evernote. It focuses on providing a lightweight yet feature-rich environment for organizing your thoughts and information.

wikidPad is a free and open-source wiki-like notebook application that allows you to store your thoughts, notes, and snippets of information in a highly organized and cross-referenced manner. Its strength lies in the effortless creation of links between pages, making it easy to navigate and connect related ideas.

Leanote is a versatile self-hosted note-taking application that blends rich text editing with Markdown support. It offers seamless synchronization across multiple devices and features built-in blog publishing capabilities, making it a powerful tool for both personal information management and content creation.

WorkFlowy is a powerful yet simple organizational tool that leverages an infinite nested list structure. It helps users capture, organize, and manage ideas, notes, tasks, and projects through outlining and collaboration, making complex information digestible and actionable.

Remember The Milk (RTM) is a robust, web-based task and time management application designed to help individuals and teams organize their tasks efficiently. With powerful features like natural language processing, recurring tasks, smart lists, and extensive integrations, RTM simplifies managing your to-do list across multiple devices and platforms.

Oinker revolutionizes how you manage conversations, tasks, and knowledge. It transforms your chats into dynamic workspaces for organized ideation, project management, and effortless information sharing, blurring the lines between communication and productivity.