OkCupid, Zoosk, Match, OurTime and Plenty of Fish are popular free dating sites for singles. All of these sites are free to sign up and browse, but premium features are only available with a paid membership.
OkCupid allows free users to browse matches and send and receive messages. This service uses a series of questions about likes, dislikes, body type preferences, morals and interests to match users. A paid membership provides more advanced search filters and greater storage space for messages. It also allows members to change their user names and see if sent messages have been read. Members may also pay to message a member whose inbox is full.
Plenty of Fish is a free dating site that allows users with free memberships to access most features, including messaging and the POF Chemistry Predictor.
OurTime is a dating website for mature singles over age 50. A free membership allows users to browse for matches and send "flirts" intended to express interest. A paid membership is required to access the messaging feature.
Tinder, a free dating site that integrates with Facebook, ask users to decide if they're attracted to people near their location based on a single photo. A premium paid service is available with advanced features, such as the ability to search wider geographic areas and rewind the profile feed to change decisions.
Zoosk and Match allow users with free memberships to access most features except messaging. To message other users or view messages, a paid account is required.