Side Space AI is a browser extension that combines vertical tab management with an in-sidebar AI assistant to help you organize your browsing sessions more efficiently and access intelligent assistance.
Key features include turning tabs into a vertical sidebar for management, AI-driven smart tag grouping, an integrated AI assistant for web conversations and summaries, and support for aggregating multiple AI models.
The extension offers a free version with basic features. There are also paid professional or lifetime plans that unlock unlimited space, advanced automation, and more.
According to its description, in some operation modes user data may be sent directly to the official AI services of your choice, without routing through intermediaries. For specifics, please consult the official privacy policy.
Primarily supports Chrome and Chromium-based browsers (such as the latest Edge), and also offers a Firefox version.
The feature analyzes the content of opened pages or your browsing behavior to automatically group related tabs into the same 'space', making centralized management easier.
Sider AI is an intelligent assistant embedded in your browser's sidebar that brings together multiple leading AI models, including GPT, Claude, and Gemini. With a sidebar-based interface, it seamlessly fits into your workflow, offering chat, content processing, writing assistance, and file analysis to boost your productivity when browsing web pages, handling documents, and creating content.

Arc AI is an innovative browser developed by The Browser Company, designed to redefine how you interact with the web through deeply integrated AI technology. It features a vertical sidebar, Spaces for separate workspaces, and AI capabilities like Ask on Page and Browse for Me, helping you access, manage, and consolidate web information more efficiently.