Ngrok

ngrok's official tagline is "Connect anything, anywhere." It started as a tunneling tool for exposing localhost to the public internet and has since grown into a networking platform that covers both development/testing and production delivery.

Main Products

• Share localhost: Share an app running locally over the public internet for demos, collaboration, and integration testing.
• Gateway: An all-in-one cloud networking platform that secures, transforms, and routes traffic for services running anywhere.
• AI Gateway: A managed access path for a wide range of models and inference providers. According to the official website, you only need to change a single URL to route between hosted and self-hosted models, with built-in failover and observability.

Key Features

• Expose local apps and APIs to the public internet for easy sharing and testing.
• Receive and debug webhooks locally; the official documentation mentions that requests can be replayed.
• Configure rules through Traffic Policy. Examples on the official website include WAF (OWASP CRS), rate limiting, IP categorization-based blocking, country-based blocking, redirects, URL rewriting, adding request headers, custom responses, and forwarding.
• Connect local MCP servers and let AI agents connect to customer data.
• Provide private connectivity for scenarios such as SaaS products reaching into customers' internal networks, connecting device fleets, accessing local databases, and opening SSH/RDP sessions.
• Offer a REST API for automated management.
• Offer enterprise capabilities such as SSO, SCIM, RBAC, audit logs, data residency, and white-labeling.

Target Users and Use Cases

• Individual developers and teams: Make local services available to colleagues, customers, or third-party callbacks during development.
• Platform and backend teams: Use ngrok as an API gateway to handle authentication, rate limiting, and security protection in one place.
• AI application teams: Route consistently to hosted or self-hosted models, with failover and observability.
• SaaS vendors: Securely connect to data and services in customers' networks or on-premises environments.

Installation and Usage

The official website offers several ways to install, such as brew install ngrok, scoop install ngrok, and docker pull ngrok/ngrok, and you can also get clients for each platform from the download page. You need to sign up for an account on the website before using it. The website offers a free way to get started (Get started for free); please refer to the pricing page for specific plans and limits.

Worth Noting

• ngrok is a hosted commercial service. Traffic is forwarded through ngrok's global network, so it is not a self-hosted solution.
• The compliance and security certifications listed on the official website include SOC 2 Type II, HIPAA and BAA, GDPR, CCPA, and EU-US DPF.
• The Traffic Policy examples on the official website show that ngrok.com itself also runs on ngrok.