Comparison of file synchronization software

This is a list of file synchronization software for which there are Wikipedia articles.

Freeware
This is a comparison of the freeware (proprietary software release free of charge) file synchronization software.

Commercial
This is a comparison of commercial software in the field of file synchronization. These programs only provide full functionality with a payment. As indicated, some are trialware and provide functionality during a trial period; some are freemium, meaning that they have freeware editions.

Glossary
Platform:

Edit conflict detection:

Renames/moves:

Version control:

Scheduling or service:

Online storage:

Network-attached storage:

Only client needed: