Plainbackup is a script for server backups written in PHP, that makes use of standard Linux tools.

Yes. :-) I tested some scripts, but they did not fit my needs.

• Allow incremental backups
• Secure upload
• Secure encrypted storage

• Modular design should make it easier to exchange specific parts of the script (e.g. file upload, encyption parts, etc.)
• Setup tool, no need to write a configuration file
• Dropbox upload support