
Description: Inlets is an open source cloud native tunnel written in Go that can expose internal services on public URLs or domains by tunneling traffic through a single endpoint server. It uses websockets and works well for exposing services securely without opening firewall ports.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ngrok is a cross-platform application that enables developers to expose a local development server to the Internet for testing and sharing their work. It creates secure tunnels from a public URL to a locally running web service.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API