1. Hardware Wallets - Physical devices like USB drives, that store private keys offline. They are highly secure because they are not connected to the internet.
2. Software Wallets - Apps for your computer and phone, convenient for everyday use but more vulnerable to hacking. They can be desktop, mobile or web based.
3. MPC Wallets - These modern wallets enhance security by splitting your private key into several parts, stored sapertely, reducing the risk of theft.