I am looking for an open source/free server backup app with GUI (web based front end). Which app do you recommend? I search a little and came up with this list: 21 of the Best Free Linux Backup Software
Which ones do you suggest. My requirement is to backup 3 servers: 1. database, 2. web server, 3. Glassfish.
My suggestion would be Bacula -- It is extremely flexible, works beautifully on Windows as well as unix systems, and there's lots of documentation. Commercial support is also available.
I will however qualify that by saying that I haven't ever used a GUI for it.