Burrow.io is described as 'Expose localhost to the internet. Features custom domains, SSL, HTTP basic auth and firewall for IP / CIDR restrictions. No download required' and is a localhost tunnel service in the development category. There are more than 25 alternatives to Burrow.io for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and Web-based apps. The best Burrow.io alternative is Fossorial Pangolin, which is both free and Open Source. Other great apps like Burrow.io are tunnl.gg, Vercel, Serveo and ngrok.
Local tunneling made easy. Instantly and easily share your local web server on the Internet with a public URL via SSH tunneling — zero installation, no signup, instant setup, and seamless operation behind NAT or firewall.
Loophole allows you to make your Web application public without actually deploying on a cloud service. It providess a user-friendly domain that you can share with your remote users/friends/teammates to try/use your WebApp.
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