Dropbox for iOS has the ability to upload images that you've taken with your iPhone, iPad or iPod touch automatically to your Dropbox account. With the introduction of iOS 7, it's even been able to do this in the background more consistently than with iOS 6. It's a great alternative to Photo Stream and one that makes syncing photos back to your Mac far easier. 

All of your photos and screenshots are uploaded to a single folder in Dropbox called Camera Uploads, so if you're frequently taking photos, it can be quite hard to find the ones you want. While we could certainly spend a few minutes every day organising the photos once uploaded, we can automate this process using a great utility called Hazel ($28).