
ActiveSync is a mobile data synchronization app developed by Microsoft, originally released in 1996. It synchronizes data with handheld devices and desktop computers. In the Windows Task Manager, the associated process is called wcescomm.exe.

Resilio Sync by Resilio, Inc. is a proprietary peer-to-peer file synchronization tool available for Windows, Mac, Linux, Android, iOS, Windows Phone, Amazon Kindle Fire and BSD. It can sync files between devices on a local network, or between remote devices over the Internet via a modified version of the BitTorrent protocol.

CloudHQ is an information technology company based in San Francisco, California. It was founded in 2011 by Senad Dizdar, who is currently the CEO. Since 2013, the company has Naomi Assaraf as Chief Marketing Officer (CMO), and Blaz Lupiscek as Chief Technology Officer (CTO).

CTERA Networks is a privately held enterprise software company headquartered in New York and Israel. The company has regional offices in the UK, Italy, France, Spain, Germany, and Australia. CTERA has partnered with companies including Amazon Web Services, Hewlett Packard Enterprise, IBM, and Cisco. Clients include Deutsche Telekom, Banco Santander, Axa and the United States Department of Defense. In October 2016 IBM became a CTERA reseller. IBM's Cloud Object Storage, integrated with the CTERA Enterprise File Services Platform, can be deployed on-premises, in the cloud or in a hybrid on-premises/cloud setup. CTERA was mentioned in Gartner's 2016 Magic Quadrant for Data Center Backup and Recovery Software, as well as Gartner's 2017 and 2018 Magic Quadrant for Content Collaboration Platforms.

Cyberduck is an open-source client for FTP and SFTP, WebDAV, and cloud storage, available for macOS and Windows licensed under the GPL. Cyberduck is written in Java and C# using the Cocoa user interface framework on macOS and Windows Forms on Windows. It supports FTP/TLS, using AUTH TLS as well as directory synchronization. The user interacts with the user interface (GUI), including file transfer by drag and drop and notifications via Growl. It is also able to open some files in external text editors.

fruux is a cross-platform synchronization service operated by fruux, the company behind the popular open source project SabreDAV. The service enables users to synchronize address book contacts, calendar events, tasks, bookmarks and notes between Apple computers and other devices. The web app also allows to manage contacts, calendars and tasks in the browser.

GroupLogic, Inc., founded in 1988 and headquartered in Arlington, Virginia, USA, is an enterprise software company that develops, sells and supports software for moving and storing data including activEcho, mobilEcho, ArchiveConnect, MassTransit and ExtremeZ-IP. GroupLogic’s products are used by information technology organizations to allow employees to access and manage corporate files regardless of the type of computing platform the employee is using to access the network.

Grsync is a graphical user interface for rsync. rsync is a differential backup and file synchronization tool widely used in Unix-like operating systems.

i-drive was a file hosting service that operated from 1998 to 2002.

iCloud is a cloud storage and cloud computing service from Apple Inc. launched on October 12, 2011. As of 2018, the service had an estimated 850 million users, up from 782 million users in 2016.

iFolder is an open-source application, developed by Novell, Inc., intended to allow cross-platform file sharing across computer networks.

Microsoft OneDrive is a file hosting service and synchronization service operated by Microsoft as part of its web version of Office. First launched in August 2007, OneDrive allows users to store files and personal data like Windows settings or BitLocker recovery keys in the cloud, share files, and sync files across Android, Windows Phone, and iOS mobile devices, Windows and macOS computers, and the Xbox 360, Xbox One, and Xbox Series X and S consoles. Users can upload Microsoft Office documents to OneDrive.

Midgard is an open source persistent storage framework. It provides an object-oriented and replicated environment for building data-intensive applications.

mobilEcho, created by GroupLogic, Inc. is a mobile file management system for iPhone and iPad. It was first introduced on May 23, 2011 at TechCrunch Disrupt in New York City. mobilEcho (mE) is information technology (IT) software for securely integrating iPhones, iPads and Android phones and tablets with corporate file servers and networks. mobilEcho is installed on corporate file servers by IT departments and installed on iPhones, iPads and Android phones and tablet computers by users; it allows for storage and secure transfer of files back and forth directly between servers and iPhones, iPads and Android phones and tablets.

Norton Zone was a cloud file sharing and online backup tool service operated by Symantec that can be used to share, sync, access, store, and backup data. It also allows for file collaboration with commenting. Norton Zone is accessible through apps for Windows, Windows RT, Android, Mac, and iOS platforms. Norton Zone uses encrypted and replicated cloud storage and provides client-side encryption.

OfflineIMAP is IMAP synchronization utility software, capable of synchronizing mail on IMAP server with local Maildir folder or another server.

OneSync is a free and open-source sync tool developed by CodeDroids team. It maximizes lightweight synchronization experience and provides both offline synchronization through thumb drive and online synchronization through Dropbox.

Rclone is an open source, multi threaded, command line computer program to manage or migrate content on cloud and other high latency storage. Its capabilities include sync, transfer, crypt, cache, union, compress and mount. The rclone website lists supported backends including S3, and Google Drive.

rsync is a utility for efficiently transferring and synchronizing files between a computer and an external hard drive and across networked computers by comparing the modification times and sizes of files. It is commonly found on Unix-like operating systems. Rsync is written in C as a single threaded application. The rsync algorithm is a type of delta encoding, and is used for minimizing network usage. Zlib may be used for additional data compression, and SSH or stunnel can be used for security. Rsync is the facility typically used for synchronizing software repositories on mirror sites used by package management systems. It is also one of the fastest ways to delete a large number of files with a binary application, especially when compared to the Linux standard applications rm and find.

ShareFile is a secure content collaboration, file sharing and sync software that supports all the document-centric tasks and workflow needs of small and large businesses. The company also offers cloud-based or on-premises storage, virtual data rooms and client portals. ShareFile is owned by Citrix Systems.

SparkleShare is an open-source cloud storage and file synchronization client app. By default, it uses Git as a storage backend. SparkleShare is comparable to Dropbox, but the cloud storage can be provided by the user's own server, or a hosted solution such as GitHub. The advantage of self-hosting is that the user retains absolute control over their own data. In the simplest case, self-hosting only requires SSH and Git. SparkleShare's support for both Android and iOS devices is on hold due to the lack of developer resources.

SpiderOak is a US-based collaboration tool, online backup and file hosting service that allows users to access, synchronize and share data using a cloud-based server, offered by a company of the same name. Its first offering, its online backup service later branded "SpiderOak ONE", launched in December 2007. SpiderOak is accessible through an app for Windows, Mac and Linux computer platforms, and Android, N900 Maemo and iOS mobile platforms.

SugarSync is a cloud service that enables active synchronization of files across computers and other devices for file backup, access, syncing, and sharing from a variety of operating systems, such as Android, iOS, Mac OS X, and Windows devices. For Linux, only a discontinued unofficial third-party client is available.

Syncthing is a free, open-source peer-to-peer file synchronization application available for Windows, macOS, Linux, Android, Solaris, Darwin, and BSD. It can sync files between devices on a local network, or between remote devices over the Internet. Data security and data safety are built into the design of the software.

SyncToy is a freeware tool in Microsoft's PowerToys series that provides an easy-to-use graphical user interface for synchronizing files and folders in Windows versions XP, Vista, 7 and 10. It is written using Microsoft's .NET Framework and uses the Microsoft Sync Framework.

Synkron is an open-source multiplatform utility designed for file synchronization of two or more folders, supporting synchs across computers. It is written in C++ and uses the Qt4 libraries. Synkron is distributed under the terms of the GPL v2.

Ubuntu One is an OpenID-based single sign-on service operated by Canonical Ltd. to allow users to log onto many Canonical-owned Web sites. Until April 2014, Ubuntu One was also a file hosting service and music store that allowed users to store data "in the cloud".

Windows Live Devices was an online device management service as part of Windows Live which will allow users to centrally access and manage the synchronization of files stored on their computers, mobile devices, as well as other peripherals such as digital photo frames. Windows Live Devices also allows users to remotely access their computers from the internet using a web browser.

Windows Live Mesh is a free-to-use Internet-based file synchronization application by Microsoft designed to allow files and folders between two or more computers to be in sync with each other on Windows and Mac OS X computers or the Web via SkyDrive. Windows Live Mesh also enabled remote desktop access via the Internet.

Windows Mobile Device Center was a Windows 7 synchronization software program developed by Microsoft, and the successor to ActiveSync. It was designed to synchronize various content including music, video, contacts, calendar events, web browser favorites, and other files between Windows Mobile devices and the Microsoft Windows operating system.

WinSCP is a free and open-source SSH File Transfer Protocol (SFTP), File Transfer Protocol (FTP), WebDAV, Amazon S3, and secure copy protocol (SCP) client for Microsoft Windows. Its main function is secure file transfer between a local computer and a remote server. Beyond this, WinSCP offers basic file manager and file synchronization functionality. For secure transfers, it uses the Secure Shell protocol (SSH) and supports the SCP protocol in addition to SFTP.

Zapier is a product that allows end users to integrate the web applications they use. Zapier is based in Sunnyvale, California and employs a workforce of 350 employees located around the United States and in 23 other countries.

ZumoDrive is a defunct cloud-based file hosting service operated by Zecter, Inc. On December 22, 2010, Zecter announced its acquisition by Motorola Mobility. The service enabled users to store and sync files online, and also between computers using their HybridCloud storage solution; the latter functionality stopped working in approximately September 2011, while the former was undergoing formal takedown on May 1, 2012. ZumoDrive had a cross-platform client that enabled users to copy any file or folder into the ZumoDrive virtual disk that was then synced to the web and the users' other computers and hand-held devices. Files in the ZumoDrive virtual disk could be shared with other ZumoDrive users or accessed from the web. Users could also upload files manually through a web browser interface. A free ZumoDrive account offered 2 GB of storage, and users could upgrade to paid plans ranging from 10 GB to 500 GB for a monthly subscription fee. The ZumoDrive service was integrated into Yahoo! Mail, allowing users to send or receive any file on their ZumoDrive, and powers HP's recent CloudDrive technology, bundled on all new HP Mini netbooks.