Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
OwnDrive - OwnDrive is a web-based storage platform allowing the professionals, enterprises, and individuals to easily upload, store, backup, share and collaborate on their files and data with others.
Resilio Sync - Resilient, fast and scalable file synchronization for enterprises and individuals
Filebase - Filebase is a software that provides file storage management by offering the unique approach to object storage, compatible with SIA, STORJ, and Skynet, having decentralized storage networks with underlying storage layers.
Dropbox - Online Sync and File Sharing