ShowHiddenFiles (was ChangeVisibility) enables you to change the visibility flag for files in all versions of OS X. It's easy to use, with a simple GUI. Much easier than using Terminal if you have to change file and folder visibility frequently. This is different from showing hidden files in that it will make selected files and folders visible even when Hidden files are not being shown.
What's New
Version 2.0.5:
- Ready for El Capitan