Osmosys is a GUI enabled download manager and accelerator for written in Python that supports simultaneous downloads, pausing and resuming downloads, and backup state files during download to prevent network errors. Supports all major browsers.
Gbacker is a program to backup and restore files using a Gmail mail account.
It uses the Gmail account as a remote file server.
In contrast to other similar solutions like gdrive, gmailsync etc
gbacker is fully compliant with the Gmail terms of use.