Harbor is a free browser extension designed for Chrome that significantly enhances tab organization and navigation. It offers a kanban-style tab manager that allows users to easily drag and drop tabs, ensuring a more streamlined browsing experience. With local-first storage, users can rest assured that their tab data remains on their device, complemented by automatic backups that guarantee accessibility even in unexpected situations. This tool is positioned as a superior alternative to OneTab, focusing on user convenience and accessibility.

In addition to its core features, Harbor incorporates smart tab group management powered by AI, which helps users declutter their browsing environment by deduplicating tabs within the current window. Users can also save tabs to collections quickly, making it easier to manage multiple projects or tasks. Furthermore, Harbor seamlessly integrates with Notion and Raindrop, enhancing productivity by allowing users to sync their tabs with these popular tools.