Photoscape - high quality photo editing software, that enables you to fix and enhance photos.

PhotoPenguin App - PhotoPenguin is a completely free batch photo editor with support for cropping, resizing, adding watermarks, and converting photos to other formats. It works on the user's device, using the capabilities of modern browsers.

Pixelmator - Pixelmator is an image-editing application for Mac and iPad.

ImBatch - ImBatch is a batch image processor with a nice graphical user interface.

ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.

Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats