Areca Backup - Features

Areca Backup is a personal file backup software.

It is released under the General Public License (GPL) v2.

Backup Engine Features :

Archives compression (Zip & Zip64 format)
Archives encryption (AES128 & AES256 encryption algorithms)
Storage on local hard drive, network drive, USB key, FTP, FTPs (with implicit and explicit SSL / TLS) or SFTP server
Source file filters (by extension, subdirectory, regular expression, size, date, status, with AND/OR/NOT logical operators)
Incremental, differential and full backup support
Support for delta backup (store only modified parts of your files)
Archives merges : You can merge contiguous archives into one single archive to save storage space.
As of date recovery : Areca allows you to recover your archives (or single files) as of a specific date.
Transaction mechanism : All critical processes (such as backups or merges) are transactional. This guarantees your backups' integrity.
Backup reports : Areca generates backup reports that can be stored on your disk or sent by email.
Post backup scripts : Areca can launch shell scripts after backup.
Files permissions, symbolic links and named pipes can be stored and recovered. (Linux only)

Archives content explorer. (including a 'find file in archives' feature)
Archive description : A manifest is associated to each archive, which contains various informations such as title, date, description, and additional technical data.
File version tracking : Areca keeps track of your files' history (creation / modifications / deletion). Each version can be selectively viewed and recovered.
Backup simulation (check whether a backup is necessary)
User's actions history : Areca keeps an history of all user's actions (archives deletion, merges, backups, recoveries).

Areca comes with a command-line interface which can be used for backup automation.