Software Alternatives, Accelerators & Startups

Clockwise VS Side Space

Compare Clockwise VS Side Space and see what are their differences

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Clockwise logo Clockwise

Time & attendance tracking with QuickBooks integration

Side Space logo Side Space

The World's First Al Assistant for Your Tabs
  • Clockwise Landing page
    Landing page //
    2023-02-07
  • 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 Arcโ€™s Sidebar and Edgeโ€™s Vertical Tabs โ€” 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.

๐Ÿš€ 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 navigationโ€”especially when working with many tabs.

โœจ Features

  • โšก๏ธ Vertical Tabs Panel โ€” Manage tabs and tab groups efficiently in a clean, space-saving sidebar.
  • ๐Ÿ—‚๏ธ Save, restore, and reorder tabs or tab groups with intuitive drag-and-drop.
  • ๐Ÿ”„ Side-by-side layout that keeps all your open tabs visible at a glance.
  • ๐Ÿ” Fuzzy search to instantly find the tab you're looking for.
  • ๐Ÿงน Suspend tabs to save memory and keep your browser running smoothly.
  • โ˜๏ธ Cloud sync (cross-browser) with a single login.
  • ๐ŸŒ› Dark Mode support.
  • ๐Ÿ’พ Space Backup Solutions

    • ๐Ÿ“‘ Export sessions as JSON
    • โ˜๏ธ Sync to the cloud via login
  • โœจ AI-powered Tab Grouping for automatically organizing related tabs.

  • ๐Ÿ”— Group Guardian automatically groups tabs based on URL patterns.

๐Ÿค– Introducing Side Copilot โ€” 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 โ€” it does the rest.

Clockwise

$ Details
-
Platforms
-
Release Date
-

Side Space

$ Details
Free Trial $39.0 / 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

Clockwise features and specs

  • Time Management
    Clockwise allows users to efficiently manage their schedules by automatically finding and organizing available time slots.
  • Integrations
    Clockwise integrates seamlessly with tools like Google Calendar, Slack, and Asana, making it easier to incorporate into existing workflows.
  • Focus Time Protection
    The tool helps create blocks of uninterrupted time to work on tasks requiring deep focus, aiding productivity.
  • Team Coordination
    Clockwise helps coordinate meetings and schedules across teams, reducing the likelihood of scheduling conflicts.
  • User-friendly Interface
    The platform features an intuitive and easy-to-use interface, making it accessible for users of varying technical skills.

Possible disadvantages of Clockwise

  • Privacy Concerns
    Users may be concerned about sharing their calendar information with a third-party service.
  • Service Reliability
    As with any third-party service, there is a risk of outages or disruptions that can impact productivity.
  • Cost
    Clockwise offers several features for free, but premium functionality requires a paid subscription, which may be a consideration for budget-conscious users.
  • Learning Curve
    Initial setup and learning how to fully utilize the features may take some time, especially for users who are not tech-savvy.
  • Dependency on Integrated Tools
    Clockwise's effectiveness can be limited if users do not frequently use the integrated tools such as Google Calendar, Slack, or Asana.

Side Space features and specs

  • ๐ŸŒˆ Arc-like Side Panel
    Weโ€™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.
  • ๐Ÿง  Smart AI Grouping
    Itโ€™s not just about organizing tabsโ€”itโ€™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.
  • โ˜๏ธ 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.
  • ๐Ÿค– AI Assistant
    Research, summarize, and organize, chat with your tabs and let Al Assistant help you browse smarter.

Analysis of Clockwise

Overall verdict

  • Clockwise is a well-received tool for those seeking better time management and productivity. Users appreciate its AI-driven scheduling capabilities and integration with popular calendar apps.

Why this product is good

  • Clockwise (clockwisetx.com) is considered a good platform due to its user-friendly interface, customizable scheduling features, and efficient time management solutions. It helps teams optimize their calendars, reduce wasted meeting time, and collaborate more effectively.

Recommended for

    Clockwise is recommended for teams and individuals who need to streamline their scheduling, enhance productivity, and spend less time coordinating meetings. It's particularly beneficial for remote teams and companies that rely heavily on efficient calendar management.

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

Clockwise videos

Clockwise Review: Features & Walkthrough

More videos:

  • Review - Siskel & Ebert - Clockwise (1986)
  • Review - Clockwise Review 2019

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 Clockwise and Side Space)
Time Tracking
100 100%
0% 0
Chrome Extensions
0 0%
100% 100
Time Management
100 100%
0% 0
Productivity
76 76%
24% 24

Questions & Answers

As answered by people managing Clockwise 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 didnโ€™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. Iโ€™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 worldโ€™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 โ€” all with natural language.

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

You donโ€™t need to switch to Arc or Edge. Side Space turns Chromeโ€™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 โ†’ instant content analysis (summary, translation, extraction, quick answers)

Agent Mode โ†’ 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 isnโ€™t โ€œjust another chatbot.โ€ 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 donโ€™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 โ€” 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 โ€” anyone who needs a smarter, faster way to organize tabs, windows, and workflows.

Power Browsers with Endless Tabs

For users juggling 20โ€“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 โ€” 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 Clockwise and Side Space

Clockwise Reviews

49 Best Timesheet Alternatives - Features, pros & cons, pricing | Remote Tools
Use Clockwise for Slack to get the power of the Clockwise calendar assistant, delivered right where you work.
Alternative products to New Google Calendar
ClockwiseMaking your calendar work for you.ProductivityCalendar and Sche...Clockwise is an intelligent calendar assistant that frees up your time so you can work on what matters. We use AI to create uninterrupted blocks of time, enhance Slack, take the stress out of complex scheduling, resolve double bookings, and so much more.1,597get it10 Alternatives to Clockwise

Side Space Reviews

We have no reviews of Side Space yet.
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What are some alternatives?

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

Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

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.

Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

Workona - A better way to work in the browser.

RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.

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