MinIO is described as 'High performance object storage released under GNU Affero General Public License v3.0. It is API compatible with Amazon S3 cloud storage service. Use MinIO to build high performance infrastructure for machine learning, analytics and application data workloads' and is a Cloud Storage service in the backup & sync category. There are more than 25 alternatives to MinIO for a variety of platforms, including Self-Hosted, Linux, Web-based, Mac and Windows apps. The best MinIO alternative is OxiCloud, which is both free and Open Source. Other great apps like MinIO are Ceph, copyparty, Amazon Simple Storage Service and Azure Blob Storage.