PBase

I am looking for some gallery software and there is so much out there. However, one thing I would like to do is put photos up on a gallery and have the general public be able to update and identify the photos for location and identity. So this would require that the public be able to edit a description that goes with a photo. Or the public could even upload a photo. With this said, would anyone know of any software that could do this? Thanks

George M.