XnViewMP is a multi-purpose media application that enables Mac users to browse through their multimedia file collections and perform various image management actions. You can also work with this program to organize, rename, and convert your favorite pictures and search for media files within your PC.
The app is available in various languages and comes with a intuitive and fully customizable interface. Personally, I like the fact that XnViewMP provides the multi-tab feature which comes in handy when performing multiple tasks (on different locations).
I consider it positive that the program supports a large variety of image formats (more than 500). You can rotate your pictures, convert them to other formats, check the info for any photo within your collection and many other tasks.
Another advantage of XnViewMP is that it offers support for batch processing when it comes to renaming and converting pictures. The output settings for both actions are very simple to configure and the results are delivered in minimum time.
To sum things up, XnViewMP provides you with an excellent solution if there is a need to manage your photo collections. The app offers you a wide range of useful tools, gives you high-quality results, and comes with no price tag whatsoever.