Soul Mate Find is geared toward people who are trying to find life partners.
For example, you can play games, send virtual flowers and deliver e-cards to those you are interested in connecting with.
Oasis Active offers the option to search for romantic partners or platonic friends.
Casual Kiss is, as the name implies, for those who are looking for something casual.
You can browse anyone's profile without even logging in to the site, and most of them are brief in text and short on information.
Always use caution when registering for a new site and read all of the fine print.
Since free sites have no barriers to entry, they are sometimes used as a way for scammers to set up free profiles to ask for money.
However, if you only have a few minutes, it can be a good starting point.
The profiles on Mingle2 are pretty brief, but one advantage is that it allows you to search for people by interest.
This site also has a mobile app available for free.