Uber - Lyft - Taxi Cab - On Demand Taxi is an application like Uber that allows you to order a taxi, book a taxi developed in Flutter with great design.
Demo: https://codecanyon.net/item/uber-lyft-taxi-cab-on-demand-taxi-complete-solution-flutter-androidios-laravel/50118776
Thinkin Cab is an online cab booking system that bridges the gap between taxi firm owners and their customers.
Demo: https://codecanyon.net/item/thinkin-cab-bike-book-car-bike-auto-full-custom-code/23195568
Flubber is a complete solution for creating an online taxi platform with a website and a mobile application for the customer and an app for the drivers, where the customer can request their ride.
Demo: https://codecanyon.net/item/flubber-taxi-cab-full-solution-with-customer-and-driver-flutter-app-web-and-admin-laravel-panel/40457293
Kareem Taxi App provides full functionality to create your own taxi service that supports multi-trip app as well as multi-country support so that the app can provide different types of service considering different areas / countries.
Demo: https://codecanyon.net/item/kareem-taxi-app-cab-booking-solution-admin-panel/25735071