aSmallWorld is an on-line social network service similar to XING, and LinkedIn. It is an exclusive invitation-only network with roughly 770,000 members.aSmallWorld shares many features with other social network services, such as profiles, an event calendar, and private messaging. Unlike most other such services, aSmallWorld allows users to list multiple cities for their locations of residences.

Facebook is a social network service and website launched in February 2004 that is operated and privately owned by Facebook, Inc.As of July 2010 Facebook has more than 500 million active users,which is about one person for every fourteen in the world. Users may create a personal profile, add other users as friends and exchange messages, including automatic notifications when they update their profile. Additionally, users may join common interest user groups, organized by workplace, school, or college, or other characteristics. The name of the service stems from the colloquial name for the book given to students at the start of the academic year by university administrations in the US with the intention of helping students to get to know each other better. Facebook allows anyone who declares themselves to be at least 13 years old to become a registered user of the website.

Bored with generic social networks? Come join the fun on hi5! Every day, millions of people meet up, hang out, play games and have fun on hi5. Check it out.

The purpose of the site is to allow registered users to maintain a list of contact details of people they know and trust in business. The people in the list are called Connections. Users can invite anyone (whether a site user or not) to become a connection.

MySpace, is a social networking website. See what's happening on MySpace! Find friends & classmates, meet new people, listen to free music & build playlists, share photos, watch videos, ...

orkut is an online community designed to make your social life more active and stimulating. orkut's social network can help you maintain existing relationships with pictures and messages, and establish new ones by reaching out to people you've never met before.

orkut makes it easy to find people who share your hobbies and interests, look for romantic connections or establish new business contacts. You can also create and join a wide variety of online communities to discuss current events, reconnect with old school mates or even exchange your favorite recipes.

Tagged is all about social discovery. We are the social network for meeting new people. Every day, all around the world, people make millions of new social connections on Tagged. Other social networks are for staying in touch with people you already know. At Tagged, we make it easy to meet new people through social games, friend suggestions, browsing profiles, group interests and much more. Tagged members can express themselves by creating custom profiles to match their individual tastes. Choose from thousands of custom profile skins or make your own. Upload your favorite video and share photos with friends. Join a group to declare an affiliation or create a new one.

Get in touch with people to generate contacts that stay connected to you for a lifetime. They may well help you in your career by providing contacts, offering jobs, or coming up with ideas.

Find new contacts, experts, friends, and colleagues.

Find jobs or get yourself found by recruiters within a professional environment.