Searching for the best file sync tools to use with a NAS

[clearbluelou]

I have a new Synology DS720+ that I want to use for both system image backups and two-way file sync.  Scheduled backups are working great with the Synology "Active Backup" software.  However, they don't provide file sync software.  The Package Center offers GoodSync and Resilio Sync.  I've tried both but can't get a good sense of the features using the free versions and I don't want to pay for one until I know if it will meet my needs and perform well.  I've also tried AOMEI, ShadowCopy, FreeFileSync, PureSync, and others but the free versions are all neutered to the point that I can't set them up how I want without paying.  I'm so frustrated that I'm tempted to just do it with scheduled robocopy or rsync jobs but I really would prefer a nice friendly interface.  What do you like?  My key requirements are:

• Windows-based, easy-to-use UI
• Two-way sync with configurable conflict resolution
• Multi-folder configuration so I can set up one-to-one relationships between source and destination
• Automatic two-way removal - deleted folder on Windows PC removes folder on NAS and vice versa
• No stupid temp files that get orphaned and fill up the NAS
• Multi-user support
• Runs as a Windows service, not a scheduled task, so it can automatically and instantly update when files and folders get created, deleted, changed

[Kilrah]

I use a mix of FreeFileSync, SyncBack and syncthing for my various purposes.

[Oshino Shinobu]

8 minutes ago, Kilrah said:

I use a mix of FreeFileSync, SyncBack and syncthing for my various purposes.

Can vouch for FreeFileSync too, though I mostly use the RealTimeSync part of it for syncing between multiple pcs and a server.

[clearbluelou]

Thanks for the replies.  I eventually figured out that Synology does provide a tool in the package manager.  I don't know why it doesn't come up when you search for 'sync' but the Synology Drive software is meeting all of my needs.