Side by side

GNU IceCat vs Prisma Browser

Both stand on web browsers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Prisma Browser combines browser security, data controls, and AI-focused protection across major desktop and mobile platforms. Its per-user plans, free trial, and no minimum seats suit small teams, while extension restrictions and the planned Microsoft 365 deprecation need attention.

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The facts

	GNU IceCat	Prisma Browser
Free plan	Yes	A free trial
Open source	Not published	Not published
Runs on	Linux	Android, Extension, iPhone, Linux, Mac, Windows
Lowest paid plan	Not published	Prisma Browser for Business (annual billing): $99 per user a year
Plans published	None	2
Maker	Not published	Not published
Website	gnu.org	get.pabrowser.com
On web browsers	#153 of 154	#149 of 154

GNU IceCat: what it does well

Prisma Browser: what it does well

Real-time malware scanning
AI analysis for unseen phishing pages
Copy, paste, and upload controls
Windows, macOS, Linux, Android, and iOS support
No minimum seat commitment

What to know first

No free plan
Extensions not recommended for unmanaged devices
Microsoft 365 feature deprecated March 2026

Alternatives to GNU IceCat Alternatives to Prisma Browser The whole list