ngrok: AI & API Gateway | Secure Tunnels & Traffic | WarmIndex

ngrok is an all-in-one cloud networking platform that provides secure tunnels, API gateways, and traffic management to securely expose and route traffic to services running anywhere.

🚀 Overview

ngrok simplifies secure networking by offering instant tunnels from localhost to the public internet and advanced production features like API gateways, load balancing, and traffic policies. It eliminates the need for complex setups like VPNs, nginx configs, or firewall changes, handling billions of requests daily on a global network.

What problem does this project solve? Exposing local dev servers for testing (webhooks, demos), securing and managing API traffic with auth/routing/transformation, connecting devices/sites securely, and providing observability—all without infrastructure headaches.

Who is it built for? Developers, engineering teams, and companies (100k+ users at Databricks, Zendesk, etc.) needing dev-to-prod ingress.

Why did you build it? Founder Alan Shreve created it to easily share local servers; it evolved into a full platform to unify ingress for modern apps, APIs, and AI.

✨ Key Features

Secure tunnels for any protocol (HTTP, TLS, TCP, WebSockets, gRPC, SSH) without firewall changes (enables instant localhost sharing and production connectivity)
Endpoints & Traffic Policy with CEL rules for routing, transformation, auth (flexible traffic control without code/deploy)
Global load balancing, DDoS/WAF protection, edge network (high performance, security at scale)
Gateways: API, AI (model routing), Device, Site-to-Site; Traffic Inspector, logs, Kubernetes Operator (specialized use cases, observability)

🛠 Tech Stack

Agent/Client: Go (cross-platform binaries)
Traffic Policies: CEL (Common Expression Language)
SDKs: Node.js, Go, Python, Java, Ruby, PHP, .NET
Integrations: Kubernetes Operator, Terraform, Docker
Auth: ngrok accounts, SSO/RBAC, service accounts
Hosting: ngrok global edge network, Cloudflare-like infra

👥 Who Is This For?

This project is useful for:

Developers who want to expose local apps securely for testing webhooks/demos
Teams looking for API gateways, K8s ingress, device connectivity
Companies building AI/ML services needing model traffic management

📸 Screenshots / Demo

Live demo: https://ngrok.com (sign up, download agent at /download)
GitHub: https://github.com/ngrok (SDKs/tools), https://github.com/inconshreveable/ngrok (archived v1 agent)

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Freemium (Free tier: 1GB data, 20k HTTP reqs/mo, 3 endpoints; Pay-as-you-go overages e.g. $0.10/GB, $1/100k reqs)

Is the source code available?

Partially — SDKs/tools: https://github.com/ngrok; old v1 agent (archived): https://github.com/inconshreveable/ngrok; core cloud agent: binaries only

Can I contribute?

File issues/PRs on GitHub repos (SDKs/tools), feedback via support portal or community.

📬 Contact & Links

Built with ❤️ and kept warm on WarmIndex.

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