There are several types of standing desks to choose from, depending on your needs and preferences. Here are some of the most common types:

1. Fixed standing desks: These are traditional desks that are set at a fixed height and designed for standing work. They can be a cost-effective option, but may not be adjustable to different users or sitting positions.

2. Height-adjustable standing desks: These desks can be adjusted to different heights, allowing you to switch between standing and sitting positions. Some models use a manual crank or gas lift, while others are motorized for easy adjustment.

3. Desktop risers: These are platforms that sit on top of a regular desk and allow you to adjust the height of your computer and other equipment for standing work.

4. Treadmill desks: These are standing desks that come with a built-in treadmill, allowing you to walk while you work. They can be a good option for those who want to increase their physical activity while working.

5. Bike desks: These are similar to treadmill desks, but instead of a treadmill, they come with a stationary bike that allows you to pedal while you work.

6. Portable standing desks: These are lightweight and portable, and can be used on a table or other flat surface to create an instant standing desk.

When choosing a standing desk, consider factors such as adjustability, stability, ease of use, and cost. Additionally, think about the type of work you'll be doing, and whether a standing desk is the best option for your needs.