Side Copilot vs Index

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Side Copilot compared with Index
Detail	Side Copilot	Index
What it does	Browse less. Get more done.	Keep work, personal life, and every project in its own space. Switch between them without closing tabs or losing your place.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free: $0/month with up to 5 spaces and basic chat. Pro: $2.9/month ($4.9 monthly equivalent) with unlimited spaces and Agent Mode. Pro+: $7.9/month ($11.9 monthly equivalent) with cross-page agent and additional tools. Yearly plans include 2 months free.	Not given
Key features	Vertical tabs manager in side panel Group tabs by domain or AI Chat mode to query open tabs Agent mode for browser automation Suspend tabs to free memory Pin and search tabs Support for multiple languages Save and restore tab groups	Spaces, each holding its own groups that open as Chrome tab groups Favorites: up to eight pinned pages that stay with you in every space Sleeping tabs that go out of sight and come back when clicked Hundreds of themes Rewind function keeping a week of changes on your computer Export one JSON file to share with AI assistants like ChatGPT or Claude Search any group, space or link from any page Private by design with no account, server, or network requests
What makes it different	AI-powered tab organization without switching browsers Side panel operates without breaking workflow Works across multiple browsers and platforms Generous free plan with cloud sync Natural language AI grouping	Keeps a week of changes you can rewind through on your computer Sleeping tabs preserve your place while keeping them out of sight
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	52 no change since last check	20 no change since last check
Trust Flow (Majestic)	20	0
Citation Flow (Majestic)	32	9
Referring domains (Majestic)	287	7

4 details filled in for both companies.

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