3 Best Free Cloud Sync Software & Best File Sync Solution

You will learn the 3 best free cloud sync software, and a simple and reliable file sync solution is introduced to help you complete local to cloud sync easily.


By Jonna Updated on September 27, 2023

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What is Cloud Sync App?

Cloud sync app typically refers to an application that is designed to ensure files in different locations up to date through the cloud. For cloud file syncing, a user sets up a cloud-based folder, to which the desired files are copied. And this folder, containing files, documents, photos, or other data, is kept up-to-date and consistent across different devices and accessible from anywhere with an internet connection.

Cloud Sync

Some key features of cloud sync software include:

  • Data synchronization between your local device (like a computer or phone) and the cloud.
  • Data accessibility from multiple devices.
  • Easy collaboration, such as sharing files/folders with others, setting permissions, and commenting on documents.
  • Keep files always up to date on different devices.
  • Offer encryption for data in transit and at rest to keep file security.

Top 3 Best Free Cloud Sync Software in 2023

If you are looking for a cloud sync tool to keep the same set of files and folders on client devices and cloud storage, please refer to the following 3 best free cloud sync software. With these tools, you can sync local files or external hard drive to cloud and manage your files easily.

Google Drive

Google Drive is popular cloud sync software free with 15 GB of cloud storage, and it offers seamless integration into the Google ecosystem, including Google Docs, Sheets, and Slides. It provides easy file sharing, real-time collaboration, and the ability to sync files across devices.

Google Drive

Google Drive for desktop is offered to upload files from computer to the Drive cloud, and there are web app and mobile app for iOS and Android. For security, Google Drive uses AES 256-bit encryption to protect data stored on its servers and TLS/SSL protocols for data transfers.



Up 15GB of free storage space

Quick file search

File organization and management

Ability to access files from everywhere

File offline access

Privacy and data security concerns

File size limits

Dependence of Internet connection


OneDrive, offering 5 GB free space, is one of the best cloud sync software developed by Microsoft. It allows users to store files and data in the cloud and access them from various devices with an internet connection. OneDrive is tightly integrated into the Microsoft ecosystem and is commonly used for personal, business, and educational purposes.

OneDrive Logo

OneDrive is available on multiple platforms, including Windows, macOS, iOS, Android, and even Linux. Users can easily share files and folders with others, both within and outside their organization, and collaborate on documents in real-time. Also, it can keep multiple versions of files, allowing users to restore previous versions or view changes made over time.



On-demand availability of files

Offer Personal Vault to add further levels of secure access for files

Bandwidth limit set

Integration with Office apps

Special character limitations in file names

Path size limitation

Limited control over sharing


Dropbox is a leading cloud storage solution available today. It allows you to sync your content, share important files, folders, and links, and collaborate with whomever, whenever, wherever.


This popular cloud sync software provides 2 GB of free storage with options to earn more through referrals or by completing certain tasks. It's known for its simple and intuitive user interface and offers reliable file syncing and sharing capabilities.



Real-time content collaboration

Dropbox Backup for auto important files and folder backup

Screenshot storing and sharing

File rewinds

Low free storage capacity

Comparatively expensive paid subscriptions

Security issues

Limited search function

Sync Files to Multiple Cloud Drives with Best Free File Sync Software

As the best free file sync software, AOMEI Backupper Standard has all-in-one professional features that allow you to sync files to various cloud sync software including Google Drive, OneDrive, Dropbox, Box, and so on to keep your data always accessible and safe.

In addition, it gives you the ability to sync files and folders to NAS, local disks, external hard drives, network share, USB devices, etc. For a comprehensive understanding of its functionalities, consider the following features:

📢 It offers versatile auto sync modes, allowing you to schedule synchronization on a daily, weekly, or monthly basis. And it supports event triggers and USB plug in synchronization mode.
📢 You have the flexibility to synchronize files using different methods: Basic Sync, Two-Way Sync, Mirror Sync, and Real-time Sync (the latter 3 options are accessible in the Pro version).
📢 Beyond synchronization, the software provides backup, restore, clone, and other tools to protect your computer files. For example, you can use it to backup computer to OneDrive and restore the backup when the original data is lost.

Now, let’s follow the steps below to figure out how to sync files to cloud with AOMEI Backupper. You need to download this freeware to your PC in advance. If you are a server user, try AOMEI Backupper Server.

Download Freeware Win 11/10/8.1/8/7/XP
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Step 1. Download and run the corresponding cloud storage app on your computer. For example, if you wish to sync files with Google Drive, run and log in to Drive for desktop.

Step 2. At the main interface of AOMEI Backupper, click Sync and select Basic Sync.

File Sync

Notes:✎...You can also use other 3 different sync methods per your needs in the upgraded version, and differences between sync methods are:
Real-Time Sync: This method sync changed files from the source directory to the destination directory in real time.
Mirror Sync: It ensures that the files in the destination directory always mirror those in the source directory.
Two-Way Sync: Any changes made in either the source or destination directory will be synchronized to the other side reciprocally.

Step 3. To specify the folders you wish to sync with Google Drive, hit the Add Folder button to add them. To sync multiple folders to Google Drive, click the plus (+) icon to select more folders.

Add Folder

Step 4. Click the inverted triangle icon > pick Select a cloud drive to choose Google Drive on the pop-up screen as sync destination, and click OK.

Select Destination

Google Drive

Step 5. (Optional) To set scheduled sync, click Schedule Sync, and choose a sync frequency per your needs.

Schedule Settings

Step 6. Click Start Sync to sync folders to Google Drive or any other cloud easily.

If you want to perform file sync, you can go to Backup > File Backup to backup local data to cloud storage for disaster recovery.
AOMEI offers users its own cloud - AOMEI Cloud, offering 1TB storage with a 15-day trial period. You can go to Backup, and select Cloud Backup to enjoy it.


This article presents the 3 best free cloud sync software and offers you an easy-to-use and reliable file sync tool that can help you synchronize local files to the mentioned three cloud drives on a single interface.

Moreover, it comes with other powerful features like File Backup to backup data to cloud drives and other locations for restoration and Disk Clone to clone SD card to larger card easily.

Jonna · Editor
Jonna joined AOMEI in 2021 and has become a professional in the areas of computer backup and restoration, disk cloning, file synchronization, etc. She maintains a keen eye for the latest technology trends, ensuring that the information provided is always in step with industry developments.