instashare - Share your photos to instagram from your mac
Ralpha Image Resizer - High-speed image batch conversion tool
Plover - Browser Airdrop - transfer files to anyone, any device
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Starfiles - File hosting done simple
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.