Software Alternatives, Accelerators & Startups

Side Space VS HoverCards

Compare Side Space VS HoverCards and see what are their differences

Side Space logo Side Space

The World's First Al Assistant for Your Tabs

HoverCards logo HoverCards

Get more content.
  • Side Space
    Image date //
    2025-11-17
  • Side Space
    Image date //
    2025-05-13

An Al-powered vertical tabs manager in your side panel.

An alternative to Arc’s Sidebar and Edge’s Vertical Tabs — now upgraded with a built-in AI assistant.

Side Space gives you complete control over your browsing experience with powerful vertical tab management and Side Copilot, an AI that helps you research, organize, and automate your workflow directly from the side panel.

🚀 How do vertical tabs work?

When vertical tabs are enabled, your open tabs are moved from the top of the browser window to the left side panel. This layout stacks tabs vertically instead of horizontally, giving you more space, better visibility, and easier navigation—especially when working with many tabs.

Features

  • ⚡️ Vertical Tabs Panel — Manage tabs and tab groups efficiently in a clean, space-saving sidebar.
  • 🗂️ Save, restore, and reorder tabs or tab groups with intuitive drag-and-drop.
  • 🔄 Side-by-side layout that keeps all your open tabs visible at a glance.
  • 🔍 Fuzzy search to instantly find the tab you're looking for.
  • 🧹 Suspend tabs to save memory and keep your browser running smoothly.
  • ☁️ Cloud sync (cross-browser) with a single login.
  • 🌛 Dark Mode support.
  • 💾 Space Backup Solutions

    • 📑 Export sessions as JSON
    • ☁️ Sync to the cloud via login
  • AI-powered Tab Grouping for automatically organizing related tabs.

  • 🔗 Group Guardian automatically groups tabs based on URL patterns.

🤖 Introducing Side Copilot — Your AI Assistant in the Side Panel

Side Copilot brings AI directly into your browsing workflow:

  • Ask questions about the page you're viewing
  • Research topics with auto-opened results
  • Summarize long articles instantly
  • Organize tabs and windows through natural language commands
  • Trigger automated actions across your browser

Just open AI Chat in the extension and start talking to your browser — it does the rest.

  • HoverCards Landing page
    Landing page //
    2026-09-03

Side Space

$ Details
Free Trial $39 / One-off
Platforms
Google Chrome Firefox Edge Brave Comet Opera
Release Date
2023 October
Startup details
Country
Hong Kong
Founder(s)
Robert Shaw
Employees
1 - 9

HoverCards

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

Side Space features and specs

  • 🌈 Arc-like Side Panel
    We’ve built an Arc-like side panel that transforms your tabs into a sleek vertical layout, making it easier than ever to navigate and manage your workspace.
  • 🧠 Smart AI Grouping
    It’s not just about organizing tabs—it’s about doing it intelligently. Our AI grouping feature clusters tabs based on content for a streamlined experience. Plus, you have control with our Group Guardian feature, letting you customize tab groupings using URL matches to set your own organizational rules.
  • ☁️ Spaces & Cloud Sync
    Take productivity to the next level! Save your tabs into different Spaces and we automatically sync them to the cloud. Your organized tabs are accessible across devices, so you can browse seamlessly wherever you are.
  • 🤖 AI Assistant
    Research, summarize, and organize, chat with your tabs and let Al Assistant help you browse smarter.

HoverCards features and specs

  • Easy Integration
    HoverCards can typically be added to websites with minimal code, often just a script tag, making it accessible for users without deep technical expertise.
  • Enhanced User Engagement
    By showing preview content when users hover over links, HoverCards can increase time on site and reduce bounce rates by keeping visitors engaged without navigating away.
  • Customizable Appearance
    The tool often allows customization of card design, colors, and content to match a website's branding and style guidelines.
  • Improved User Experience
    Users can preview linked content without clicking away from the current page, saving time and reducing unnecessary page loads.
  • No Coding Skills Required
    Non-technical users can often set up and manage HoverCards through a simple dashboard or plugin interface rather than writing complex code.

Possible disadvantages of HoverCards

  • Performance Impact
    Adding third-party scripts like HoverCards can potentially slow down page load times if not optimized properly, affecting overall site performance.
  • Limited Customization Depth
    While basic customization is available, advanced users may find the design and functionality options too restrictive for highly specific use cases.
  • Mobile Experience Limitations
    Hover-based interactions don't translate well to touch devices, which may require alternative implementations or reduce effectiveness on mobile platforms.
  • Potential Cost
    Depending on the pricing model, premium features or higher usage tiers may become costly for larger websites or businesses with significant traffic.
  • Dependency on Third-Party Service
    Relying on an external service means your site's functionality could be affected by their uptime, changes to their API, or discontinuation of the service.

Analysis of Side Space

Overall verdict

  • SideSpace is a well-regarded browser productivity tool that helps users organize their tabs and workspaces efficiently, making it a solid choice for anyone who struggles with tab overload.

Why this product is good

  • Helps organize and group browser tabs into dedicated spaces, reducing clutter
  • Improves productivity by allowing quick switching between different projects or contexts
  • Offers a clean, intuitive interface that's easy to adopt
  • Saves and restores tab sessions so you never lose your place
  • Reduces memory usage by managing inactive tabs effectively

Recommended for

  • Power users who juggle many browser tabs at once
  • Professionals managing multiple projects or clients simultaneously
  • Researchers and students who need to organize reference materials
  • Remote workers seeking better digital workspace organization
  • Anyone prone to tab overload looking to streamline their browsing

Side Space videos

Side Space 2.0 | The World First AI Assistant for your Tabs

More videos:

  • Demo - Introducing Side Space 1.0

HoverCards videos

No HoverCards videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Side Space and HoverCards)
Chrome Extensions
81 81%
19% 19
Productivity
79 79%
21% 21
Browser Extensions
77 77%
23% 23
Tab Manager
100 100%
0% 0

Questions & Answers

As answered by people managing Side Space and HoverCards.

What makes your product unique?

Side Space's answer

Side Space combines powerful vertical tab management with an integrated AI assistant, that's something no other browser extension offers.

Instead of choosing between a better tab manager or an AI browser, Side Space gives you both in one clean side panel.

What's the story behind your product?

Side Space's answer

I am the kind of person who always ends up with too many tabs, too many windows, and no idea where that one page I read yesterday has gone. I tried a bunch of the new AI browsers, but they all felt like replacements for tools I already rely on. I didn’t want a new browser. I just wanted my existing one to feel less chaotic.

So I built Side Copilot for myself first. It helps me manage tabs, jump between windows, find stuff I opened days ago, and generally clean up the mess I constantly create. The thing that changed everything for me was giving it the ability to understand natural commands. I can tell it to group my research tabs or bring back an article from last week and it actually does it. It also has a simple chat mode for quick summaries or translating a page on the spot.

I realized it solved a real problem for me, so I decided to make Side Copilot completely free. I’m curious how other heavy browser users feel about this. Would an assistant like this make your browsing less stressful?

Why should a person choose your product over its competitors?

Side Space's answer

  1. The world’s first AI assistant built for your tabs

Most AI tools only analyze text. Side Copilot controls your tabs, windows, history, and pages using real browser APIs. You can research, summarize, organize, open sites, perform searches, restore sessions, and automate actions — all with natural language.

  1. A true vertical tabs manager, not a browser replacement

You don’t need to switch to Arc or Edge. Side Space turns Chrome’s side panel into a clean vertical tabs system with:

Drag-and-drop tab & group management

Fuzzy search

Memory-saving tab suspension

Saved spaces & session restore

Cloud sync

Dark mode

You get a modern browser experience without leaving Chrome.

  1. Dual AI modes for different tasks

Chat Mode → instant content analysis (summary, translation, extraction, quick answers)

Agent Mode → deep automation (organize tabs, clean up windows, run research workflows)

Fast when you need speed, powerful when you need automation.

  1. Page, tab, window, and history tools powered by real browser capabilities

Side Copilot isn’t “just another chatbot.” It uses more than 20 AI MCP tools built on Chrome Extension APIs:

Tab tools: create, close, group, move

Window tools: tile, arrange, focus

History tools: analyze, find, reopen past pages

Page interaction tools: scroll, navigate, search, capture screenshots

Session tools: restore recently closed tabs/windows

This gives Side Space automation capabilities even AI browsers don’t have.

How would you describe the primary audience of your product?

Side Space's answer

Side Space is designed for anyone who works, researches, or creates directly in the browser — especially those who manage dozens of tabs every day. If the browser is your workspace, this is for you.

Productivity-Driven Professionals

Marketers, PMs, developers, designers, analysts — anyone who needs a smarter, faster way to organize tabs, windows, and workflows.

Power Browsers with Endless Tabs

For users juggling 20–200+ tabs across multiple windows. Side Space brings structure, clarity, and smart automation without forcing you to switch browsers.

AI-Forward Users

If you want to control your browser with natural language, automate tasks, and let Side Copilot handle the heavy lifting, this is your perfect tool.

Researchers & Knowledge Workers

Students, academics, journalists, content creators, and anyone who collects and analyzes information online. Summarize, extract, search, and research pages instantly.

People Who Want Arc/Edge-Style Features — But in Chrome

Enjoy a vertical tabs manager, powerful side panel, and full AI assistant experience without giving up the browser you already love.

User comments

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What are some alternatives?

When comparing Side Space and HoverCards, you can also consider the following products

OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.

MaxFocus: Link Preview extension - Preview links without leaving your current page

Workona - A better way to work in the browser.

Enhanced Image Viewer - View images in Chrome your way. Zoom and pan to see every detail, remove the scrollbars for a clean look and view images full-screen in the same tab.

tabExtend - Easily save tabs and quickly create notes in your browser

Wiseone - Wiseone is a new AI-powered browser extension that helps you effortlessly master any subject you're reading online.