A common problem we have as web developers is sharing a web site or app we’re running off localhost to others. Yes, you can always have a quick deployment strategy, but Localtunnel provides something a bit slicker and easier. Just install the Ruby gem, run a command and you’ve got a subdomain on localtunnel.com to share to your coworkers and clients. Granted, it’s no substitute for a full deployment environment, especially in the context of formalized QA testing, but especially for quick shares and checkins with coworkers, it’s a nice idea.