Photopus Pro is a photo and image editor with batch-processing capabilities. Since it has only basic functions, it is really easy to use. Basically, you only need to select the photos or folders you want to edit. The program has a wizard that makes the process even easier; you only need to add and adjust the filters you want to use and the program will do the rest. Aditionally, you can rename and/or resize your files according to your needs.
The filters are grouped into three categories: Adjust Color, Transform, and Effects. Each category is composed of different options and each of these are adjustable so you can achieve exactly the results you are looking for,
Once you have set all the options you want, you can simply click on the Process button. This will apply the settings to all the images or folders you selected, It is a very easy process.
The program has disadvantages, though. The most remarkable is that unlike other programs, this one takes a little while to process the images. Also, it supports the most common image formats but not the RAW format, which is commonly used by advanced photographers.
There is also a paid-based Pro version with these and more options.