For the file/folder-backup Duplicati is the best free app
For a good backup functionality is is necessary to cleanup more/older than x backups (CLU) not only older backups than x months, and to configure the schedule of a backup also for each 2nd Monday 10:00 and to pause if the system is busy (Sch).
Comparison of file/folder backup applications:
Comparison ...... CLU . Sch . Lang
SyncBack Free...... No ... Yes .. English only
Cobian Backup .. Yes .. No ... Many
Acronis True Im.. Yes .. Yes .. Many
Duplicati ...............Yes .. Yes .. Dan.En.Fr.Port.
Areca Backup ..... No .. Yes .. English only
Personal Backup No .. Yes .. Engl.+German
Saft Backup .........Yes .. No .. Engl.+German

Duplicati (1) is the best free backup application.
Acronis True Image (2) has all necessary functions, has multi-language UI and additionally can do harddisk images with best functions, but it is not free.
In difference to Duplicati Saft Backup can do backups with volume shadow copy (VSS), but cannot do a backup on each second Monday and has no flexible file filter.
(1) Duplicati
(2) Acronis True Image
(3) Personal Backup
(4) SaftBackup