FreeFileSync

vs

Icedrive

Syncthing is a free and open-source continuous file synchronisation software that utilise peer-to-peer technology. The software allows users to send files between two or more computers in real time, safely protected from prying eyes. Syncthing is available for Windows, Mac, Linux, Android, Solaris, and BSD.

GoodSync provides a simple and secure file backup and synchronization software that ensures data saftey. With GoodSync your files can be backed up and syncronized in real-time, periodical, or scheduled through personal automation options.

With Nextcloud, users can host their own secure cloud solution for file storage, collaboration and communication for enterprise or personal purposes. Nextcloud gives you full control over your own data and where and how you host it. The software can be hosted on-premise or on any VPS or cloud instance provided by third-party web hosts. If you value privacy and security, Nextcloud might be the right choice for you. Nextcloud is both free and open source and developed in an open, transparent and trustworthy manner.

Resilio Sync is a proprietary peer-to-peer file and folder syncing solution for homes and businesses. The software can be used for sharing files or syncing and transferring enterprise data securley. The peer-to-peer protocol can be accessed with clients available for Android, Amazon Kindle Fire, BSD, iOS, macOS, Linux, Windows and Windows Phone.

With ownCloud, organizations can collaborate and be more production on their own secure enterprise file sharing (EFSS) platform. The ownCloud platform is self-hosted and allow for secure file sharing within an organization. The platform can be hosted on premise or on a cloud instance, controlled by the organization. The software is written in PHP and Javascript and is fully open source, released under the AGPLv3 license. ownCloud can run on most server hardware and operating systems, and the client for accessing ownCloud is available for Android, iOS, macOS, Linux and Windows.