Index vs Web4 Browser

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

Index compared with Web4 Browser
Detail	Index	Web4 Browser
What it does	Keep work, personal life, and every project in its own space. Switch between them without closing tabs or losing your place.	AI antidetect browser and multi-account workspace with true-to-device browser identity
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	HK
Pricing model	Free	Freemium
Pricing	Not given	Free plan includes 3 browser environments with no team members. Starter at $9/month provides 15 environments. Small Team at $19/month includes 1 team member and 55 environments. Popular at $39/month includes 2 team members and 125 environments. Scale Team at $69/month includes 4 team members and 250
Key features	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	Isolated browser profiles with persistent identity and session data Real-device fingerprinting and AI environment modeling Per-profile proxy and network configuration Browser automation with visual workflows and headless execution Team permissions, roles, and activity logging AI browser workflows and MCP skill integration Multi-environment grouping and workspace organization Profile template copying and batch creation
What makes it different	Keeps a week of changes you can rewind through on your computer Sleeping tabs preserve your place while keeping them out of sight	Real-device signals and AI environment modeling instead of manual parameter mixing Isolated execution boundaries with team-level access control and activity logging Unified workspace for profiles, proxy routing, automation, and team handoffs
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)	20 no change since last check	44 no change since last check
Trust Flow (Majestic)	0	8
Citation Flow (Majestic)	9	26
Referring domains (Majestic)	7	54

4 details filled in for both companies.

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