Secure Developer Tunnel Without the Overheads
Expose local development environments, webhooks, and staging APIs to the internet instantly. Safe endpoints, automatic protocol tunnels, and lightweight binaries.
A Lightweight Alternative to ngrok
We provide isolated TLS tunnels and lightweight cross-compiled binaries so you can debug webhooks and staging flows instantly.
Instant Public URL
Run a simple terminal command to get an instant public URL. Share it with clients or plug it into webhook handlers directly.
Zero Server Firewalls
Bypass home router configurations, NAT firewalls, and port-forwarding constraints. The tunnel agent establishes secure outbound sockets automatically.
Pre-Compiled Binaries
Download lightweight, single-file compiled executables for Windows, macOS, and Linux. No dependencies or runtime packages are required.
Download CLI Clients
Get the lightweight tunnel binary compiled specifically for your operating system.
Windows (x64)
courseexe-tunnel-windows.exe
Linux (x64)
courseexe-tunnel-linux
macOS Intel
courseexe-tunnel-mac-intel
macOS Silicon
courseexe-tunnel-mac-silicon
Quick Start
Launch a tunnel in under 30 seconds:
# 1. Download and extract binary, then authorize client (macOS/Linux):
chmod +x ./courseexe-tunnel-linux
# 2. Start tunnel exposing your local web server port (e.g. 3000):
./courseexe-tunnel-linux 3000
# 3. Follow the terminal login URL prompt to authorize, and start debugging!
Frequently Asked Questions
Everything you need to know about developer tunnel.
Q. Do I need an account to use the tunnels?
An anonymous session can be established, but requires you to complete a browser authorization step when the CLI starts. Setting a persistent token allows tunnels to run completely automatically.
Q. What protocols are supported?
Currently, HTTP and HTTPS proxies are fully supported. Perfect for exposing Next.js, Express, Django, Laravel, or Spring Boot applications.
Q. Is there a bandwidth or rate limit?
Yes. Basic developers are allowed 1 active tunnel at a time with a rate limit of up to 45 requests/min. Upgraded plans will offer higher limits.
Ready to expose your local app?
Open your tunnels dashboard to configure your token, bypass browser warnings, and run tunnels with persistent endpoints.