ownCloud

ownCloud is an open-source software company that specializes in file syncing and sharing solutions for enterprise-grade organizations. Their platform, known as ownCloud, serves as a secure file platform and essential business tool for businesses of all sizes. With ownCloud, users can easily synchronize, access, and collaborate on files and folders, both within their organization and with external partners. The company also offers the ownCloud Marketplace, a platform where users can extend the functionality of their ownCloud instance by publishing and installing ownCloud apps. ownCloud is widely used by companies seeking to maintain control over their file storage and sharing while enjoying modern and efficient productivity tools.

https://owncloud.com/