Dropbox will enable you to store your files instantly and optionally share them in Windows, Linux, and Android.

Microsoft OneDrive is a cloud-based service that creates a folder that automatically backs up everything between your computers and OneDrive.com.

Google Drive is a cloud file storage and synchronization service encompassing Google Docs, Sheets, and Slides. Google Drive permits the collaborative editing of documents, spreadsheets, presentations, drawings, forms, and more. Try the Save to Google Drive Chrome extension.

MEGA is a functional cloud backup extension that provides solid security and privacy features.

MEGAsync For Desktop, Chrome, Firefox, Edge, Opera, and Android is a freeware app that can synchronize all of your devices with your MEGA account.

With SugarSync, you decide which folders you want to sync and where you want to sync them.

Google Backup and Sync can upload and store files from any folder on your computer, camera, and SD cards to the cloud.

Rclone is a powerful Command Line tool designed for synchronizing files and directories between a wide range of cloud storage services and local file systems.

Microsoft OneDrive Troubleshooter is the free Troubleshooter from Microsoft to fix problems with OneDrive, the free 5GB cloud storage that comes with Windows.

XigmaNAS is a cross-platform Open Source Storage NAS (Network-Attached Storage) distribution based on FreeBSD.

Dropbox Folder Sync is a simple app for Dropbox that allows you to seamlessly sync folders outside the Dropbox folder.

CloudMounter permits mounting different cloud storage and web servers to your PC as local disks and can be quite valuable for a low-capacity SSD laptop.

CarotDAV is a simple, freeware WebDAV/FTP/SFTP/ Online Storages client for Windows.

Malwarebytes Secure Backup automatically backs up your important documents, music, photos, and videos to our state-of-the-art online data center.

COMODO Cloud is a desktop application that can be used to easily upload your valuable files onto a safe online account.

Syncbox is built upon your personal hardware, therefore it stores all your data up to terabytes without any subscription fee. No longer available to download but we have a number of other listings to choose from in our Cloud Backup category.

DragonDisk is a powerful file manager for S3 compatible cloud storage service, such as Amazon S3®, Google Cloud Storage® and Cloudian® powered clouds.

Toolwiz Remote Backup can download files from a remote PC without installing anything on the remote PC.

Duplicati enables you to store encrypted backups to online cloud services.

DropboxPortableAHK provides you with all the online file storage of Dropbox but in a portable app.

Proton Drive is a secure cloud-storage service built to give you secure online storage for your files, but also keep them accessible.

CBackup offers a reliable cloud storage service along with an easy-to-use backup system to help you protect your computer from potential data loss.