CloudBerry Backup for Linux allows you to backup Linux to Amazon S3, Microsoft Azure, Google Cloud or other cloud storage of your choice.
Backup and Sync replaces Google Drive and lets you upload and manage your files on the cloud.
ZIP Extractor lets you extract files from your archives to your Google Drive storage.
Open Drive is a GUI client for Google Drive that lets you sync your files and folders to the Drive from your machine.
Pouch lets you access your Google Drive from the bookmarks bar.
Whisply enables you to send files directly from your browser protected by state-of-the-art end-to-end encryption using AES-256. After choosing the files you want to send, you connect to Dropbox, Google Drive or Microsoft OneDrive and upload them encrypted.