PortKnox - PortKnox is a free OwnCloud provider.
AWS Storage Gateway - AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage.
GetFreeCloud - GetFreeCloud is an OwnCloud provider that offers 6Gbytes for free!
VMware vSAN - VMware vSAN is radically simple, enterprise-class software-defined storage powering VMware hyper-converged infrastructure.
1.1.1.1 - The free app that makes your Internet safer.
Minio - Minio is an open-source minimal cloud storage server.