Bookmark OS is an all-in-one bookmark manager that combines the functionalities of a bookmark manager, tab manager, task manager, and note-taking tool, along with the ability to store and manage files. With an elegant and customizable desktop interface inspired by Mac and Windows, Bookmark OS aims to help users stay organized and productive. As a bookmark manager, users can organize, sort, and browse their bookmarks just like files on their desktop. The AI-powered folder suggestions feature allows users to save bookmarks to the correct folders with just one click. Visual bookmark icons, which are web page screenshots, provide a useful way to visualize bookmarks. The Dropbox backup feature syncs a backup copy of bookmarks to Dropbox on a weekly basis, ensuring data safety. Additionally, users can preserve web pages by saving a full-text searchable copy of their bookmarks. The task manager feature allows users to manage time-sensitive bookmarks as tasks alongside general to-do items. Users can quickly save links as tasks with due dates, and tasks can be nested under other tasks for better organization. The quick find feature enables users to search tasks and to-do lists in one simple search with autocomplete. Due dates can be set down to the hour, and there is an inbox to see and manage any overdue tasks. Reminders via email, SMS, or browser notifications for upcoming tasks are planned as an upcoming feature. The note-taking feature allows users to create one-off notes similar to documents on their desktop. The web clipper feature preserves content copied from web pages, and tables provide a way to organize structured data. Code blocks can be used to save code snippets and useful commands, and smart links make it easy to edit link titles and URLs. Images can be resized and floated, and soon there will be the option to add math equations to notes using LaTeX. Bookmark OS is designed for a wide range of users, including everyone, designers, developers, students, teachers, and more. Users can collaborate with friends using shared folders, tackle projects by keeping project bookmarks, to-dos, and notes together in one folder, create folders for daily journal entries, and leverage "view all" with tags and filters to easily organize and find specific items. The platform also offers features like folder search, folder icons, tab management, tags, and keyboard shortcuts for increased productivity. Additional features of Bookmark OS include the ability to upload files, share and collaborate on folders of bookmarks, sync bookmarks backup with Dropbox, import bookmarks from any service, save bookmarks by email, fix duplicates with the duplicate resolver, and more. This comprehensive utility aims to provide users with personal productivity Zen by offering everything they need to stay organized and productive.