File synchronization ensures that two or more data storage devices, computers, or programs have the same information at a given time. You would agree to the fact that organizing your business data across various devices is not as simple as it sounds. There are different processes in a single business – for example, operations, marketing, recruiting, customer support, finance, etc., and ensuring that the same data is available to all the team members working in these different processes is itself a challenge.

What is File Sync Software?

File sync software is used to store copies of on-premise data on other devices or the cloud. It automatically copies or deletes files as required to ensure that two or more locations have the same set of data.  A well-featured file sync software can solve these issues and help you eliminate the problems within your organization like miscommunication, errors, fraud, delays, and inevitable losses. Let’s have basic information about file sync software, why is it required and the features to look for while selecting one, as that would help you in choosing the software that best suits your business.

Features to look for in a File Sync Software

Cross-Platform Compatibility

The file sync software you select should be able to organize files and folders using any device Using Windows, Mac, and Linux platforms. This would help your team members to access files quickly without any restrictions.

Unlimited Data and Users

The file sync software should allow you to synchronize an unlimited number of files and data volumes. Moreover, the number of users allowed to synchronize the data should not be limited. Obviously, your business will grow, and these limitations can be a problem for you at that time.

File Recovery and Snapshot

Using a file sync software; the users should be able to recover an old version file or deleted file easily. Snapshots taken for files and folders is a handy way to restore the data you require. Your file sync software should have this feature so that you don’t lose any important data created in the past.

Locking Files and Folders

The file sync software you choose should allow you to lock files and folders so that you can restrict users from editing or updating the data which is not required to. This will also restrict the system from creating conflict files that can confuse the users.

Data Monitoring Logs

The file sync software should help you in monitoring your data by providing the information relating to who accessed and updated the files, the specific permissions given to the users, and changes in those permissions, etc. This makes team collaboration seamless and eliminates confusion.


The file sync software should have high-end security features like data encryption, virus scan, two-factor authentication, etc., to protect your data from malicious attacks and suspicious access.

File Sharing and Permissions

Unauthorized access to data can hinder the confidentiality of the important information of your organization. The file sync software you select should allow you to set up user permissions for data access, and protect the data with password authentication.


The file sync software should integrate with other applications and tools to ease the job of synchronizing data located on multiple devices and platforms.

Now, when you know the key features to look for in a file sync software, let us go through information about the top free and open source file sync software, so that it becomes easy for you to pick the best one for your business.

The Top 11 Free and Open Source File Sync Software

#1 FreeFileSync

FreeFileSync is an open-source and free file sync software available for Windows, macOS, and Linux. It compares and synchronizes the data in two or more devices by determining the difference between the folders and after that, transfers only the changed files.  In lieu of copying all the files even if one file has been updated, it is less time consuming to copy only the changed files. If you need to keep your folders synced on a real-time basis, quickly and easily, this tool can be a pocket-friendly option.

Key Features

  • Compares and synchronizes multiple files parallelly
  • Manages versions of the files and maintains the history of deleted or updated files
  • Can copy locked files
  • Detects file usage conflicts and propagate deletions
  • Provides full Unicode support
  • Enables case sensitive synchronization
  • Can include or exclude files using filters
  • Includes localized interface in 30+ languages
#2 DirSync Pro

DirSync Pro is a compact but extremely powerful software used for syncing files and folders. It can synchronize the content of two or more folders recursively. You can synchronize files from your computer to your USB stick and then use that USB stick to synchronize files to another computer. It has a user-friendly interface which allows you to configure many synchronization options according to your business needs.

Key Features

  • One-way and two-way synchronization possible
  • Includes customizable synchronization modes
  • Can sync unlimited files and folders
  • Allows you to schedule synchronization tasks
  • Includes comprehensive filters to include and exclude files/folders while synchronizing
  • Works on every modern operating system including Windows, Linux, Macintosh, etc
  • Includes advanced logging and reporting facilities
#3 Cyberduck

Cyberduck is a versatile file syncing tool has easy to use interface and leverages enterprise file sharing and cloud storage facilities. It supports FTP, Google Cloud Storage, Dropbox, WebDav, Azure, etc.for storing and synchronizing files. It allows encryption of files using a Cryptomator to secure your data on any server or cloud storage. It is a highly secure and open source file syncing software which is absolutely free and doesn’t require any registration or account creation.
Key Features

  • Allows organizing your bookmarks with drag and drop facility
  • Allows you to search using the filter field
  • Allows browsing and moving files seamlessly in the browser with caching for the best performance
  • Allows browsing large folder structures efficiently
  • Allows dragging and dropping to and from the browser to upload and download
  • Can easily copy files between servers
  • Can integrate with other system technologies
#4 Syncthing

Syncthing is a continuous and decentralized file synchronization tool. Unlike other cloud storage software, it doesn’t require any central server. Syncthing works based on peer-to-peer architecture rather than client-server architecture. The computers attached with the Syncthing network stores the files in shared folders and push updates and changes in those files to each other using peer-to-peer connections.


  • Includes a responsive and intuitive interface which can be accessed through your browser
  • Allows synchronizing unlimited folders with different people
  • Stores data with high-end security on your computers
  • Identifies every node by a strong cryptographic certificate
  • Can work on Cross-platform, Windows, macOS, and Android devices
#5 Pydio Cells

Pydio cells is a free and open source file sync software that can work as a single point of access to all your data storage. Your teams can collaborate seamlessly from anywhere at any time using this software. It is considered as a modern file management platform which is built according to your business logic and regulations. You can deploy this software on your servers or any computer, depending on your requirements.

Key Features

  • Allows sharing files internally within the organization and externally by empowering IT admins to monitor and protect your data
  • Allows users to access files from anywhere at any time using the web and mobile app
  • Facilitates the team members to collaborate quickly through online chat
  • Sends notification when any user accesses and modifies a document
  • Allows you to organize your data the way you want
  • Helps in easily uploading, downloading, and sharing even the large files
  • Includes a smooth and customizable user interface
#6 Synkron

Synkron is a free and cross-platform file synchronization software having easy to use interface with versatile features. It helps you in keeping your files and folders updated on multiple devices. You can seamlessly sync your documents, music, or pictures and access their latest versions from anywhere.

Key Features

  • Allows syncing multiple files and folders at the same time
  • Allows excluding files which you don’t want to be synced
  • Allows you to configure your detailed synchronizations
  • Allows you to restore deleted or overwritten files in previous synchronizations
#7 ownCloud Community Edition

ownCloud is one of the best file sync software which works as a cloud-based collaboration platform. It stores your files in a single centralized location with high-end security and privacy. Using its free desktop software and mobile app, you can access your images, videos, documents, any time from anywhere. All your files and folders are always synced and updated automatically regularly.

Key Features

  • Being multiple device and platform friendly; your data can be accessed from anywhere at any time
  • The data is stored on your private server or cloud, and so you can ensure that your data is under your control and secure
  • Can be accessed using Android and iOS devices
  • Due to its open and flexible architecture, it allows you to manage your data the way you want
  • Having 50 million users and community of 1,100 people; it is considered as the biggest open source projects existing worldwide
#8 Seafile

Seafile is one of the best open source file syncing and sharing solutions which is free for upto three users. It is highly reliable software which is designed for businesses striving to achieve high performance and productivity. It helps in syncing, sharing, and collaborating data within devices and teams in an organization. It includes a special built-in Wiki feature which can help you in building your team’s knowledge at an exponential level.
Key Features

  • Allows cross-platform file syncing
  • Supports Android and iOS devices
  • Keeps versions and snapshots for files and folders which can be restored easily
  • Can lock files to prevent access of the files to unauthorized users
  • Supports online editing and co-authoring of office files like doc, pptx, xlsx
  • Provides audit log to monitor your data regularly
  • Allows file sharing and permission control for users and groups
  • Supports client-side end-to-end encryption helping in protecting the data
#9 Synchredible

Synchredible is a free file sync software that can synchronize, copy, and save single as well as entire drive for you. It can help you in scheduling syncing of your files and folders so that you can keep your files synced and updated on all the devices automatically. It can also detect changes done in files and folders and synchronizes the edited files in a secure and reliable way.

Key Features

  • Automates backup and synchronization of files and folders
  • Updates new files/folders and delete redundant files/folders
  • Can compare file contents
  • Can generate reports, logs, and notify through emails
  • Allows file integrity checkup
  • Can schedule recurring tasks
#10 SyncFolders

SyncFolders helps in synchronizing the files, subfolders, and folders located on different disk drives, storage devices, or even on the network. It can help you in easily copy new and updated files and folders in both directions. It is an extremely useful tool for synchronization and backup process for organizations. It is compatible with all Windows versions from Windows XP and higher. Whether for business or personal, it can be used for any backup or synchronization tasks with high-end security.

Key Features

  • Supports two-way synchronization for files and folders
  • Also works as a backup tool
  • Provides preview before the actual synchronization
  • Can detect conflicts and file collisions
  • Tracks file modifications and deletions
  • Can propagate deletions and detect file renames
  • Compares files based on date, size, and content
  • Can integrate with Windows Task Scheduler
  • Can support multiple synchronization rules
  • Can synchronize an unlimited number of files
#11 Allway Sync

Allway Sync is a file sync software that uses innovative synchronization algorithms to synchronize your data between desktops, laptops, USB drives, WebDAV servers, FTP/SFTP, and other online data storages.  It supports data compression and encryption. It has an easy-to-use interface combined with bulletproof reliability. Moreover, it can also synchronize your PC data with a Mac through Sync Gateway.

Key Features

  • Allows two-way synchronization between various computers and storage devices
  • Tracks file editions, deletions, and complete synchronization history
  • Can generate full report relevant to differences between synchronized files and folders
  • Capable of synchronizing multiple folders at the same time
  • Can synchronize unlimited file size
  • Allows flexible synchronization and customization

So, these were the top 11 free and open source file sync software. If you are still confused about which one to select, the below chart might help by comparing the features of these file synchronization tools.

Leave a Comment