Software Alternatives, Accelerators & Startups

Docusaurus VS Side Space

Compare Docusaurus VS Side Space and see what are their differences

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Docusaurus logo Docusaurus

Easy to maintain open source documentation websites

Side Space logo Side Space

The World's First Al Assistant for Your Tabs
  • Docusaurus Landing page
    Landing page //
    2023-09-22
  • 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.

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

Docusaurus features and specs

  • Easy Setup
    Docusaurus offers an easy and quick setup process, making it accessible for users to get started quickly. It provides a template to kickstart documentation projects efficiently.
  • Customizable
    It is highly customizable with options to add custom themes, plugins, and translations, allowing users to tailor their documentation to specific needs and visual styles.
  • React-Based
    Built on React, it enables developers familiar with React to seamlessly create documentation components and extend functionalities using React's ecosystem.
  • Versioning
    Docusaurus supports documentation versioning, making it easier to maintain and access historical versions of documentation for different releases of a project.
  • Extensive Plugin Ecosystem
    Offers a wide array of plugins to enhance functionalities, such as search capabilities, SEO, and integrations with other tools and services.
  • Good Performance
    Optimized for performance, providing fast load times and a smooth user experience for accessing documentation.
  • Active Community
    Docusaurus has an active and supportive community that contributes plugins, themes, and offers help, making it easier to find solutions to common problems.

Possible disadvantages of Docusaurus

  • Steep Learning Curve for Non-React Developers
    Developers not familiar with React may find it challenging to customize or extend Docusaurus documentation due to the React-based nature of the tool.
  • Limited Out-of-the-Box Features
    While highly customizable, the basic setup can feel limited, and users often need to add plugins and custom code to meet their specific requirements.
  • Dependency Management
    Being React-based, it comes with Node.js and NPM dependencies, which may add some overhead for managing and updating dependencies.
  • Static Site Limitations
    As a static site generator, it may be less suitable for dynamic content that requires frequent real-time updates or complex backend integrations.
  • Complex Configuration
    For projects requiring extensive customization, the configuration can become complex and harder to manage, potentially requiring more effort and expertise.

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.

Analysis of Docusaurus

Overall verdict

  • Docusaurus is generally considered a good choice for creating documentation websites, especially for open source projects. Its structured approach, alongside its powerful customization options, makes it suitable for both small and large scale documentation needs.

Why this product is good

  • Docusaurus is a popular open-source project developed by Facebook for creating, deploying, and maintaining open source project websites with ease. It is praised for its simplicity, flexibility, and rich feature set, including built-in support for versioning, localization, search, and theming. It is built on React, which allows developers to extend and customize their documentation site extensively.

Recommended for

    Docusaurus is recommended for developers and project maintainers who need to create and manage comprehensive documentation for open source projects or internal tools. It is particularly valuable for those who prefer a React-based approach and need features like versioning and localization out of the box.

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

Docusaurus videos

F8 2019: Using Docusaurus to Create Open Source Websites

More videos:

  • Review - Build and deploy Docusaurus
  • Review - Docusaurus - Docs dan Blog Final

Side Space videos

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

More videos:

  • Demo - Introducing Side Space 1.0

Category Popularity

0-100% (relative to Docusaurus and Side Space)
Documentation
100 100%
0% 0
Chrome Extensions
0 0%
100% 100
Documentation As A Service & Tools
Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Docusaurus and Side Space.

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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Reviews

These are some of the external sources and on-site user reviews we've used to compare Docusaurus and Side Space

Docusaurus Reviews

Best Gitbook Alternatives You Need to Try in 2023
In conclusion, there are several alternatives to Gitbook that are available out there. Each one has its own set of advantages and disadvantages, and the best choice will depend on your specific needs and project requirements. Consider giving Archbee, Notion, Bookstack, and Docusaurus a try to see which works best for you. Remember, you can choose the right tool to get your...
Source: www.archbee.com
Best 25 Software Documentation Tools 2023
Docusaurus is an open-source documentation tool specifically designed for creating documentation for software projects, with a focus on documentation websites and easy integration with version control systems.
Source: www.uphint.com
19 Best Online Documentation Software & Tools for 2023
Docusaurus is an open-source online documentation tool that is powered by MDX. You can maintain different versions of your documentation so that it is in sync with your project’s stages. You can also translate your docs into a language your end-users prefer by using tools like Git and Crowdin. Furthermore, with Docusaurus, you don’t have to worry about the design and...
10 static site generators to watch in 2021
Built using React, it supports writing content in MDX so that JSX and React components can be embedded into markdown, but also aims to remain easy to learn and use by providing sensible defaults and the ability to override if the developer has need. Recently releasing a major update with Docusaurus 2 beta, many of its principles were inspired by Gatsby but it is more focused...
Source: www.netlify.com
20 Best Web Project Documentation Tools
Save time and focus on your project’s documentation. Simply write docs and blog posts with Markdown and Docusaurus will publish a set of static html files ready to serve.
Source: bashooka.com

Side Space Reviews

We have no reviews of Side Space yet.
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Social recommendations and mentions

Based on our record, Docusaurus seems to be more popular. It has been mentiond 225 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Docusaurus mentions (225)

  • I built a GUI-powered Userscript manager for faster userscript creation!
    I used Docusaurus to host my documentation website. Although it used mdx (based on React) while the rest of my website was using Svelte, there just wasn't a solution that worked nearly as well out of the box. There I made some basic tutorials and wrote documentation for the API. - Source: dev.to / 5 months ago
  • 🦊 GitLab CI: Automated Testing of Job Rules
    If you use a doc-as-code tool like VitePress, Asciidoctor, or Docusaurus, you can render CSV files as HTML tables at build time — either natively or through a custom plugin. Most tools support CSV includes out of the box or with minimal effort, and any AI assistant can generate the glue code for your specific stack in seconds. - Source: dev.to / 8 months ago
  • Choosing Your Documentation Tooling: A Practical Guide
    There's no shortage of documentation tools out there, and honestly, that can make the decision harder rather than easier. After working with various clients and our own projects here at Digital Speed, we've found ourselves reaching for a handful of tools repeatedly: Docusaurus, VuePress, Redocly, and Fumadocs. - Source: dev.to / 7 months ago
  • Technical Writers Are Not Junior Developers
    Docusaurus is a popular choice for developer-first documentation, especially for teams that prefer Git-based workflows and static site generation. - Source: dev.to / 8 months ago
  • # Why I Chose Mintlify (And What I Wish I Knew Earlier)
    Docusaurus gives you complete control. It's open-source, React-based, and incredibly flexible. The trade-off? You're essentially maintaining a website. For a solo technical writer at a startup, that overhead wasn't something I could justify. - Source: dev.to / 8 months ago
View more

Side Space mentions (0)

We have not tracked any mentions of Side Space yet. Tracking of Side Space recommendations started around Feb 2024.

What are some alternatives?

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

GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.

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.

Mintlify - The AI-powered documentation writer. It's documentation that just appears as you build

Workona - A better way to work in the browser.

ReadMe - A collaborative developer hub for your API or code.

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