FolderSync enables simple sync to cloud based storage to and from local folders on the device SD cards. It support a wide range of different cloud providers and file protocols, and support for more platforms are added continuously. Root file access supported on rooted devices.
Effortlessly sync your files. Backup your music, pictures and other important files from the phone to your cloud storage or the other way around. It has never been easier. Automation support using Tasker and similar programs enables fine grained control of your syncs.
FolderSync contains a full file manager, that enables you to manage your files locally and in the cloud. Copy, move and delete your files in your cloud/remote accounts. Support for creation/deletion of buckets in Amazon S3. Upload and download files from the phone. It’s all supported.
- Amazon S3 Simple Storage Service
- Box
- CloudMe
- Dropbox
- Google Drive
- HiDrive
- Livedrive Premium
- MEGA
- MyDrive.ch
- MyKolab
- NetDocuments
- OneDrive
- OneDrive for Business
- OwnCloud
- pCloud
- Storegate
- SugarSync
- WEB.DE
- Yandex Disk
- FTP
- FTPS (SSL/TLS implicit)
- FTPES (SSL/TLS explicit)
- SFTP (SSH File Transfer)
- Samba1/CIFS/Windows Share
- SMB2
- WebDAV (HTTPS)

The free version contains ads. You can upgrade in-app to pro version. The pro version has no limitations. In all other regards the pro and lite versions are identical.
http://www.tacit.dk/foldersync/changelog
http://www.tacit.dk/support
http://www.tacit.dk/foldersync/faq
Optional permission that can be granted if Foldersync should detect SSID name on Android 9 or newer.

Needed to determine current network state
Needed to access info about the current WiFi state (SSID etc.)
These two are needed to be allowed to turn WiFi on and off
Needed to autodiscover WebDAV, SMB, FTP and SFTP servers using Bonjour/UPNP protocol
Needed to access the internet connection to send and retrieve files
Needed to read and write files from and to SD card
Needed to automatically start after reboot of device, so scheduled syncs will still run
Needed to keep the device running during a sync, so it doesn’t enter sleep mode
FolderSync enables easy sync of files between cloud storage and Android devices.

WHAT’S NEW
Fix potential Android 12 crash. Added luckycloud account type.