找類似嗜好的朋友：
https://www.meetup.com/
https://bumble.com/en-us/bff

https://lovely.tw/ 台灣
https://www.ipair.com/ 台灣
https://www.honeyhoney.us/
http://www.2redbeans.com/ 北美華人交友
http://www.jiaoyou8.com/

https://tantanapp.com/ (中國)

https://tinder.com/ (最受歡迎網站)
https://www.happn.com/
https://bumble.com/ (tinder創辦人離開創辦)
http://www.match.com/
https://www.okcupid.com/
http://www.eharmony.com/
https://www.zoosk.com/
https://www.theleague.com/ (菁英交友)
https://hinge.co/

http://grindr.com/ (同性戀gay, bi, trans, and queer people)

其他：

https://nextdoor.com/ 鄰居
http://www.ashleymadison.com/ 外遇
https://www.bni.com/ BNI: Business Network International