Twitter

https://twitter.com/search-advanced

https://socialbearing.com/

https://www.twitonomy.com/

http://sleepingtime.org/ (Find the sleeping schedule of anyone on twitter)

https://tweetdeck.twitter.com/

https://tinfoleak.com/

https://spoonbill.io/ (Works with other social networks too, must try though)

https://github.com/twintproject/twint

https://www.youtube.com/watch?v=-YPuJqvae0c