Differences

CarotDAV?

CarotDAV is a Simple WebDAV / FTP / SkyDrive / DropBox / GoogleDrive / Box / SugarSync client for Windows OS, available free of charge. It is also able to read GoogleDocs or IMAP.

http://rei.to/carotdav_en.html

filezilla

https://filezilla-project.org/

ODrive

GUI client for Small Google Drive Google Drive based on the Small Electron Electron . https://liberodark.github.io/ODrive/

Syncthing

Syncthing is a continuous file synchronization program. It synchronizes files between two or more computers in real time, safely protected from prying eyes. https://syncthing.net/ https://github.com/canton7/SyncTrayzor/releases/latest

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Task Runner