Designed for developers, it provides HTTP, TCP, and UDP tunnels through a command-line client or desktop application, allowing users to share projects, test APIs and webhooks, connect remotely to servers, and expose services such as game servers or smart-home dashboards. HTTP tunnels include HTTPS and support custom subdomains, while users can connect their own domains with automatically issued certificates.

The service also offers a browser-based HTTP traffic inspector for viewing, filtering, and replaying requests and responses. WebSocket support, automatic reconnection, TLS encryption, and servers located in Russia are among its other features. Users can get started with a free account and a simple command; paid plans add capacity and options such as reserved subdomains, custom domains, and UDP tunnels. fxTunnel accepts payment in rubles and provides Russian-language support. By combining multiple tunnel protocols with development and traffic-debugging tools, it offers a practical way to publish and manage local services without first deploying them to a public server.