Update README.md with Kopia

Add Kopia in Backup section

README.md

@@ -96,6 +96,7 @@ _See also: [Restic's list of Linux backup software](https://github.com/restic/ot
 - [Duplicati](https://www.duplicati.com) - Backup client that securely stores encrypted, incremental, compressed backups on cloud storage services and remote file servers. ([Source Code](https://github.com/duplicati/duplicati)) `LGPL-2.1` `C#`
 - [Duplicity](https://duplicity.gitlab.io/) - Encrypted bandwidth-efficient backup using the rsync algorithm. ([Source Code](https://gitlab.com/duplicity/duplicity)) `GPL-2.0` `Python`
 - [Proxmox Backup Server](https://www.proxmox.com/en/proxmox-backup-server) - Proxmox Backup Server is an enterprise-class, client-server backup solution thatis capable of backing up virtual machines, containers, and physical hosts. ([Source Code](https://git.proxmox.com/?p=proxmox-backup.git;a=tree)) `GPL-3.0` `Rust`
+- [Kopia] (https://kopia.io/) - Encrypted, Compressed, and Deduplicated Backups Using the Cloud Storage You Pick.Supports GUI and CLI on Windows, macOS and Linux. `Apache-2.0` `Go`
 - [rclone](https://rclone.org/) - Command-line program to sync files and directories to and from different cloud storage providers.. ([Source Code](https://github.com/rclone/rclone)) `MIT` `Go`
 - [Rdiff-backup](https://rdiff-backup.net/) - Reverse differential backup tool, over a network or locally. ([Source Code](https://github.com/rdiff-backup/rdiff-backup)) `GPL-2.0` `Python`
 - [Restic](https://restic.net/) - Easy, fast, verifiable, secure and efficient remote backup tool. ([Source Code](https://github.com/restic/restic)) `BSD-2-Clause` `Go`