Readwise VS Side Space
Compare Readwise VS Side Space and see what are their differences
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Readwise
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Hardcover
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Side Space
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interTabs
An Al-powered vertical tabs manager in your side panel.
An alternative to Arcโs Sidebar and Edgeโs 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.
๐ 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 navigationโespecially when working with many tabs.
โจ Features
๐พ Space Backup Solutions
โจ AI-powered Tab Grouping for automatically organizing related tabs.
๐ Group Guardian automatically groups tabs based on URL patterns.
๐ค Introducing Side Copilot โ Your AI Assistant in the Side Panel
Side Copilot brings AI directly into your browsing workflow:
Just open AI Chat in the extension and start talking to your browser โ it does the rest.
Readwise Side SpaceSide 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.
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 didnโt 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. Iโm curious how other heavy browser users feel about this. Would an assistant like this make your browsing less stressful?
Side Space's answer:
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.
You donโt need to switch to Arc or Edge. Side Space turns Chromeโs 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.
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.
Side Copilot isnโt โjust 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 donโt have.
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 20โ200+ 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.
I imported my kindle highlights, as many others. Now I daily review some highlights (thanks to a dashboard, I am motivated). And where I didn't create highlights, as I only listened to the audiobooks, I get the highlights from others. It also allows to create beautiful quotes. It adds the book cover and matches quote and background with colours found on the book title! Really nice!
Based on our record, Readwise seems to be more popular. It has been mentiond 88 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.
Anyway, as I reached the end of the chapter, I wanted to read my Readwise's daily recap. However, my iPhone was in other room. I didnโt want to get up; I was tired. - Source: dev.to / 29 days ago
The only highlights that Readwise retrieves semi-automatically are from the books I buy from Kindle, by going into the Readwise app and clicking a button. If I upload them to Kindle or need highlights from the Apple Books app, I have to open the book, go to my highlights, select them all, and then email them to a Readwise email address. - Source: dev.to / over 1 year ago
Readwise also has this feature. I get a daily email with a random assortment of highlights that have been pulled in from multiple sources (Reader, Notion, Kindle, etc.) The product benefit in their case is that it's kind of like Zapier, but for notes. https://readwise.io/. - Source: Hacker News / over 1 year ago
Go to readwise.io and create an account if you don't already have one. - Source: dev.to / over 1 year ago
Sign up for a Readwise account if you haven't already readwise.io. - Source: dev.to / over 1 year ago
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
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.
Instapaper - Instapaper is a simple tool to save web pages for reading later.
Workona - A better way to work in the browser.
Obsidian.md - A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
tabExtend - Easily save tabs and quickly create notes in your browser