Qtd Sync vs Dropbox : Which is Better?

Qtd Sync

Qtd Sync is a backup client and server.

License: Open Source

Apps available for Windows Linux

Dropbox is an easy to use freemium cloud storage solution. It has a client sync utility for multiple platforms. Developed by Dropbox Inc.

License: Freemium

Apps available for Mac OS X Windows Linux Online Android

Feature	Qtd Sync	Dropbox
File-sync
Stability
Support for Amazon S3
2 way sync
Selective synchronization
Unlimited storage
Centralized model repository
Encrypted folder
Online Cloud Storage
Backup
Cloud Storage
Comparative analysis of two destinations
Folder Comparison
Portable
Encrypted backups
Schedule Backup
Encryption
File by file encryption
Cloud sync
End-to-End Encryption
File Versioning
File sharing
File Storage
Mirror Backup
Password encryption
Backup profiles
Incremental backup
AES encryption
Built-in player
Built-in viewer
Scan documents
Free storage
IFTTT integration
Integrated PDF Viewer
Works offline too
Ad-free
Drag n drop
Windows Explorer integration
Folder sync
Compatible with Microsoft Office
Office Online integration
Works Offline
Podcast Hosting
Real-Time Synchronization
Shared folders
Shared links
Cloud based
Crypto folder
High Level
Privacy focused
Calendar integration
Sync Contacts
Autotagging
Self-hosted in intranet or private cloud
Bookmarks
Peer-To-Peer
Decentralized
Real-time sync
Sync between devices
Development API
Encrypted sync
Multiple backups and version history
Based on Blockchain
Distributed
Unlimited bandwidth
Android Sync
Accounting Integration