Here are a few sites I use. They may not be for everyone. Maybe there is one some will like.
Others can add their favorites if they want to.
https://servimg.com/upload.php
http://www.bild.me/
http://megauploaded.org/
http://www.zippyshare.com/
http://postimg.org/
http://www.uploadhouse.com/
http://www.pixentral.com/
http://www.imageshack.com/
http://photobucket.com/
http://www.freeimagehosting.net/
http://tinypic.com/
http://www.imagebam.com/
https://imgur.com/
http://img-up.net/
http://someimage.com/
http://www.imageurlhost.com/
http://www.use.com/
http://www.4freeimagehost.com/
http://www.imagetitan.com/
http://beeimg.com/
http://mkerala.com/u/
http://www.postimg.com/
http://aciai.me/