PayPal is an online payment system that allows users to send and receive money from around the world. It was founded in 1998 by Peter Thiel, Max Levchin, and Paul Cordova. PayPal has become a popular choice for businesses and individuals who want to make payments without using traditional banks or credit cards. Some of the features of PayPal include:

1. International payments: PayPal allows you to send and receive money from anywhere in the world. This makes it easy to conduct business with clients or friends who live in different countries.

2. Mobile payments: PayPal offers mobile payment options through its app, allowing you to pay for things like groceries, bills, and taxis on your phone.

3. Security: PayPal has strong security measures in place to protect your financial information. You can set up two-factor authentication to add an extra layer of protection.

4. Refunds: PayPal offers refunds for purchases made through their platform, so you can get your money back if something doesn't go as planned.

5. Payment processing: PayPal handles the transfer of funds between your bank account and the seller's bank account. This means you don't have to worry about dealing with international currency conversions or other fees associated with sending money overseas.

Overall, PayPal is a convenient and secure way to make payments online.