Photography (1312 programs)
Pros: One step easy editing. Portable - fits on a USB stick. Excellent for beginner.
Cons: Very limited editing options. Saves changes in JPG.
Pros: Batch image conversion. Compatible with most image formats. Supports multi-core processors.
Cons: More features upon purchase. Some function works depending on platform. Limited editing tools.
Pros: Nicely integrated in Microsoft PowerPoint. Lots of styles and images included. You can customize slides individually.
Cons: Requires user registration (even the Free version). Results are not always satisfying.
Pros: Optimizes your images fast. Straightforward GUI. Lets you apply effects to the optimized images.
Cons: Limited to optimizing JPG and PNG files. Basic image editing functions. Does not really produce lossless compression.
Pros: Easy to create collages. Exports to PSD.
Cons: Not many shapes available.