Cobian Backup is a free, donation-supported backup scheduler for Microsoft Windows. The original version (1.0) was released in 2000. Version 7 saw a complete rewrite. As of Version 8 (2006) it supports Unicode, FTP, compression (Zip, SQX), encryption (including Blowfish, Rijndael, DES, RSA-Rijndael), incremental and differential backup.It supports long file names (32.000 chars) on backups except on ZIP backup (256 only). The software may be installed as an application or a service running in the background. Multilingual support is done via user-submitted language files. It is written in Delphi by Luis Cobian.

Cobian Backup became open source (under the Mozilla Public License) in late January 2007.