With Google Images Extractor you can:
1° – Download google images asynchronously;
2° – Export and Import your list of downloads;
3° – Download and search at the same time;
4° – Run the app from a pen-drive without instalation;
5° – Specify the size of images in two ways;
6° – Filter results to remove pornographic content;
7° – Keep previous search results;
Searches are limited to 300 images at a time but you can keep the results of previous search and create an infinite download list.