# Duplicacy > A new generation cross-platform cloud backup tool with lock-free deduplication Duplicacy backs up your files to many cloud storages with client-side encryption and the highest level of deduplication. Built on a lock-free deduplication design, it works smoothly with most cloud storage services. ## Key Features - Lock-Free Deduplication: a unique approach that manages deduplicated chunks without using any locks - Cross-Platform: runs on Windows, macOS, and Linux - Extensive Cloud Support: Amazon S3, Backblaze B2, Google Cloud Storage, Microsoft Azure, Wasabi, SFTP, and more - Client-Side Encryption: data is encrypted before leaving your computer - Web-Based GUI: intuitive dashboard for managing backup, copy, check, and prune jobs - Command Line Interface: powerful CLI for scripting and automation - Open Source CLI: command line version source code available on GitHub - Customizable: white-label the web GUI with your own branding for managed backup services ## Links - Homepage: https://duplicacy.com/ - CLI Guide: https://duplicacy.com/guide.html - Web GUI Guide: https://duplicacy.com/gui_guide.html - Download: https://duplicacy.com/download.html - Buy License: https://duplicacy.com/buy.html - Forum: https://forum.duplicacy.com - GitHub (CLI): https://github.com/gilbertchen/duplicacy-cli - Design Document: https://github.com/gilbertchen/duplicacy-beta/blob/master/DESIGN.md - Privacy Policy: https://duplicacy.com/privacy_policy.html ## Pricing - CLI: free for individual use, $50/machine/year for commercial use - Web GUI: personal and commercial licenses available at https://duplicacy.com/buy.html ## Contact - Support: duplicacy-support@acrosync.com - Company: Acrosync LLC