Starfiles - File hosting done simple
instashare - Share your photos to instagram from your mac
Pocket Drive - Wirelessly transfer files from desktop to iPhone or iPad
Frame.io Watch Folders - Accelerated, secure, & indestructible uploading to Frame.io
Pushbullet - Pushbullet - Your devices working better together
FileRoom.io - Browser airdrop to send files to anyone, on any device