Browser sessions sandboxes

AgentSandboxes lists 3 browser sessions with source-linked specs.

3 sandbox providers

Browser sessionsOnline
Browserbase
Hosted headless-browser sessions for web agents, with the MIT-licensed Stagehand SDK.
Browser sessionsOnline
Kernel
Browser infrastructure for agents: headless and headful sessions, standby pools and per-second billing.
Browser sessionsOnline
Steel
Apache-2.0 browser API for agents (steel-browser), with hosted sessions and stealth mode.

Browser sessions by city

The cities with the most browser sessions are Online, Global (3 sandbox providers).