Photoshop: How to remove red eyes from a photo without Adobe Photoshop?

It often happens that the resulting colored photos have the red-eye effect, i.e. red pupils in photos of eyes. It occurs when using a photographic flash very close to the camera lens (as with most compact cameras) in ambient low light. But you can easily remove red eyes within the Soft4Boost Photo Studio program interface using the Red Eye Correction tool.