Virtually any photo manager out there lets you perform mundane tasks like adjusting contrast, adding a watermark, or applying effects to your photos. But even the most powerful applications like digiKam or F-Spot can’t really help you when you need to perform the same action (or a sequence of actions) on dozens or hundreds of photos. For those tasks you need a batch processing utility like Phatch. This nifty tool can perform no less than 35 different actions on your photos, and its user-friendly graphical interface makes it easy to create advanced multi-step batch rules (or action lists in Phatch’s parlance).