There are several types of egg incubators, including:

1. Still-air incubators: These are basic incubators that rely on natural convection to circulate air, and they are typically used for small-scale hatching of eggs.
2. Forced-air incubators: These use a fan to circulate air, which helps maintain a consistent temperature and humidity level. They are commonly used for hatching poultry, reptile, and bird eggs.
3. Turn-style incubators: These are cylindrical incubators that rotate the eggs to ensure even hatching and to simulate the movement of the eggs in a natural nest.
4. Cabinet incubators: These are large incubators that can hold a large number of eggs, and they are often used in commercial hatcheries.
5. Automated incubators: These are advanced incubators that use technology to control temperature, humidity, and egg turning, making the hatching process easier and more efficient.
6. DIY incubators: These are homemade incubators that can be built using materials such as Styrofoam boxes and light bulbs, and they are often used by hobbyists or those with a small number of eggs to hatch.

Each type of egg incubator has its own advantages and disadvantages, and the choice of incubator will depend on the number of eggs to be hatched, the species of eggs, and the budget of the user.