1. Copenhagen Taxis (official taxis): The most common and reliable option for taxis in Copenhagen. Easily recognizable with their yellow color and rooftop sign, they provide metered fares and accept credit cards.

2. Uber: Uber operates in Copenhagen, offering a convenient and often cheaper alternative to traditional taxis. Simply download the app, request a ride, and pay through the app.

3. Taxa 4x35: One of the largest taxi companies in Copenhagen, Taxa 4x35 offers a fleet of modern vehicles and 24/7 service. They accept both cash and credit cards.

4. DriveNow: For those who prefer a more self-driven experience, DriveNow provides electric cars for short-term rental. Simply register, find a car nearby, and pay by the minute or hour.

5. Free Now (formerly MyTaxi): Another popular taxi app in Copenhagen, Free Now allows you to book and pay for licensed taxis with ease. Their app provides real-time tracking and estimated fares.

6. Copenhagen Airport Taxis: Specific taxi services are available at Copenhagen Airport to provide hassle-free transportation to and from your destination. Pre-booking is recommended, especially during peak travel times.

Remember to always ask for a receipt and ensure that the taxi is licensed before starting your journey.