goTenna
Use your smartphone to communicate when you don't have service
goTenna is a sleek, rugged device that pairs wirelessly with your smartphone, allowing you to communicate even if you don’t have cell service or wi-fi.
Use of the device is free of subscription charges and is completely private. It enables you to message friends as well as others within range (usually 1-3 miles, but can be up to 32 miles). goTenna is ideal for anytime you may be off-grid – traveling abroad, crowded events, remote outdoor areas – or simply when you'd rather be your own network.
More like goTenna
Startups doing something similar, featured in the last two years
Send instant safety alerts with live location, photo, and help
Private personal CRM for the people you care about.
Send files and text instantly using a six-character code
Helping couples start hard conversations more safely
Master Serbian, Croatian, Bosnian, and Montenegrin with clear grammar
Smarter Insights, Faster
AI-powered dating focused on real compatibility
Scale personalized emails that drive replies and revenue
Report urban and environmental problems in your neighborhood with one click
Verify and Find the email addresses you need