App in the Air might be a bit more popular than Foursquare. We know about 1 link to it since March 2021 and only 1 link to Foursquare. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You may have heard of some of the high profile websites using Eleventy — EsLint, Foursquare, Web.dev, and V8.dev to name a few. - Source: dev.to / almost 2 years ago
Not self-hosted, but I use App in the Air on my phone. Source: 11 months ago
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
JetRadar - Compare flights from hundreds of airlines & travel agencies
Yelp - The free Yelp mobile app is the fastest and easiest way to search for businesses near you. Download it now to get started.
Trip38 - Check-in for any airline & all travel itineraries in one app
Flamp - Reviews of companies in your city.
TripIt - TripIt is a travel app that creates a master itinerary to organize all of your plans for your vacation or work trip in one spot.