Alternatives to rsync to do a backup on a VPS

Here are a lot of possibilities to do a backup of your server or VPS :

dd cp rsync,
rdiff,
rsnapshot,
backuppc,
Linux Hot Copy,
unison,
duplicity,
Simple Bash Backup Script,
tklbam,
tar,
wput (to save a server on a dedicated server or vps for backup),
mysqldump (to backup mysql),
bacula,
spideroak.

Rsync is the most popular way to do backups.