The technology stack for taxi app development usually consists of both front-end and back-end tools. For front-end development, frameworks like React Native or Flutter are often chosen for cross-platform compatibility. On the back end, developers may use Node.js, Django, or Ruby on Rails. Real-time functionalities rely on WebSockets, MQTT, or Firebase, while data is stored in databases such as MongoDB or PostgreSQL. Payment gateways like Stripe or Razorpay are integrated for secure transactions. The entire stack is chosen based on the app’s scale, performance requirements, and budget.