Skip to content
Agent Search Engine

Issue 001 / A living technical almanac

Rankings never sold

Agent Infrastructure · Head-to-head

registry vs steel-browser

registry and steel-browser are both agent infrastructure. registry is A community driven registry service for Model Context Protocol (MCP) servers, while steel-browser is open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web witho…. Here's an independent, side-by-side look at how they compare — and which fits.

registry

Infrastructure· Open source

A community driven registry service for Model Context Protocol (MCP) servers.

Visit registry
steel-browser

Infrastructure· Open source

Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web witho…

Visit steel-browser

Bottom line

registry and steel-browser are both open-source agent infrastructure you can self-host for free. registry is written primarily in Go; steel-browser in TypeScript. Neither is universally better — pick by fit.

Side by side

Specregistrysteel-browser
TypeInfrastructureInfrastructure
ModelOpen sourceOpen source
PricingOpen sourceOpen source
GitHub stars6,9987,318
LanguageGoTypeScript
LicenseApache-2.0
Last activityJul 2026Jul 2026

Key differences

  • registry is written primarily in Go; steel-browser in TypeScript.

Choose registry if

your team works primarily in Go.

Choose steel-browser if

your team works primarily in TypeScript.

About registry

A community driven registry service for Model Context Protocol (MCP) servers.

Full registry profile →

About steel-browser

Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.

Full steel-browser profile →

Frequently asked

What's the main difference between registry and steel-browser?
registry is written primarily in Go; steel-browser in TypeScript.
Is registry or steel-browser better?
Neither is universally better. registry is the stronger fit for teams working primarily in Go; steel-browser for teams working primarily in TypeScript. Use the side-by-side specs to decide by your own constraints.
Is registry or steel-browser free?
registry is free to run and self-host; steel-browser is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.
Which is more popular, registry or steel-browser?
By GitHub stars — a proxy for open-source adoption — steel-browser is ahead (7.3k vs 7.0k). Stars measure attention, not necessarily the better fit for you.
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →

More agent infrastructure comparisons

All agent infrastructure