Software to synchronize two folders at one disc
I'd like to kindly ask you if you don't know any software or script I can use to synchronize two folders. I'm using Dropbox and I'd like to have there up to date datas. But I would like to work on the files (tex and pdfs ) at my home folder at some other place than right in the dropbox folder. Anyway I'd like to have the files in dropbox synchronized.
So I would like to have two folders,
How can I keep them synchronized? Is this possible?
Thank you very much