Plenty of Fish or POF is a worldwide-known dating website for romantic and casual relationships and is one of the first dating sites ever.

Created in 2003, it became an instant hit, being promoted by numerous celebrities, such as Lady Gaga. The site gained positive reviews and served as a judgment-free zone for singles all over the world.

The site uses a matches compatibility approach, calculating approximate choices based on previous selections. It also has one of the best support teams with 24/7 availability and security provided by moderators.

You can use the site for free and even send messages without paying a dime. An upgraded version costs 38.70 per two months.