Compressify - Compress video files by 20-60%
instashare - Share your photos to instagram from your mac
Zipped - Your swiss army knife for ZIP files on iOS
Plover - Browser Airdrop - transfer files to anyone, any device
The Unarchiver - Get the top application for archives on Mac. It's a RAR extractor, it allows you to unzip files, and works with dozens of other formats.
Starfiles - File hosting done simple