Pushbullet is a service that acts as a bridge between your mobile and desktop OSes, sets the gold standard for developer updates.

TransferBigFiles.com makes it easy to deliver larger files (up to 1000 MB) to email recipients, and the files can even be protected.

WeTransfer is a cloud-based computer file transfer service.

UploadFiles.io is a secure, anonymous, free. It's the simplest way to send files from A to B.