Side Space

Side Copilot is a browser extension that combines vertical tab management with AI-powered assistance. It lets you organize tabs into spaces, sync them across devices, and use chat or agent modes to manage and automate browser tasks. It is designed for creators, productivity enthusiasts, and professionals who want to reduce tab clutter and streamline their browsing workflow.

How it works

Side Copilot lives in a vertical panel on the side of your browser, making it easier to scan, identify, and switch between tabs. You can create separate spaces for work, social media, shopping, study, or hobbies, and focus on one space at a time. Tabs automatically sync across devices when you log into your account, so your spaces are always up to date.

Key capabilities

The extension includes a chat mode that understands the context of your open tabs, letting you ask questions about them. Agent mode can take actions to automate your browser, such as grouping tabs, managing windows, searching history, and researching topics. You can also group tabs by domain, by AI, or with custom patterns using Group Guard, and use fuzzy search to find any tab or space instantly.

Who it is for

Side Copilot is trusted by over 16,000 users, including professionals at leading tech companies like ByteDance. It is aimed at creators, productivity enthusiasts, and professionals who deal with many tabs and want to keep their workspace organized. The extension supports multiple languages, including English, Chinese, French, Spanish, and Japanese, and offers dark mode for comfortable night browsing.

Pricing and limits

The free plan includes up to 5 spaces with cloud sync, access to chat mode, and unlimited AI chat with the current page. The Pro plan is described as best value for tab hoarders, offering unlimited spaces and access to Side Copilot for browser automation. Pricing is simple and transparent, with no credit card required for the free plan, and you can cancel anytime.