SyncMate syncs data on Mac with Android and iOS devices, Windows services (Outlook, Office 365 Business and Office 365 Home accounts), other Macs, Google, Dropbox and iCloud accounts, any mounted storage devices, MTP devices.
CloudMounter is a single client for multiple cloud services and web servers. Mount different cloud accounts to Mac as removable disks - OneDrive, Google Drive, Amazon S3 and Dropbox. Connect FTP/SFTP and WebDAV servers as network disks in Finder.
Android File Transfer Mac will sync data between your Mac and Android. With Android File Transfer Mac you can sync contacts and calendars between these devices for free. Images, videos, music, folders, and other can be synced with paid edition.