Best Free Software-Defined Storage (SDS) of 2026

QuantaStor, a unified Software Defined Storage platform, is designed to scale up and down to simplify storage management and reduce overall storage costs. QuantaStor storage grids can be configured to support complex workflows that span datacenters and sites. QuantaStor's storage technology includes a built-in Federated Management System that allows QuantaStor servers and clients to be combined to make management and automation easier via CLI and RESTAPIs. QuantaStor's layered architecture gives solution engineers unprecedented flexibility and allows them to design applications that maximize workload performance and fault tolerance for a wide variety of storage workloads. QuantaStor provides end-to-end security coverage that allows multi-layer data protection for cloud and enterprise storage deployments.

croit is a software company focused on reliable, enterprise-grade storage operations, with a strong emphasis on 24/7 Ceph and Proxmox support. We support organizations running business-critical infrastructure by providing around-the-clock access to experienced storage engineers, guaranteed response times, and deep expertise across complex production environments. Our support covers the full lifecycle of Ceph and Proxmox clusters, from day-to-day operations and troubleshooting to upgrades, performance optimization, and incident response. In addition to expert support, croit develops a dedicated software platform purpose-built for operating Ceph at scale. The croit software continuously analyzes cluster health, performance, and configuration, transforming low-level metrics into clear, actionable insights. It helps teams detect risks early, resolve issues faster, and avoid downtime by making Ceph behavior transparent and understandable, even in large or highly dynamic environments. By combining 24/7 human expertise with intelligent automation, croit enables organizations to run Ceph and Proxmox more efficiently and with greater confidence. Our customers reduce operational overhead, shorten recovery times, and gain the visibility and control needed to operate modern software-defined storage reliably in production.

MooseFS represents a revolutionary concept in the Big Data Storage industry. It allows us combine data storage with data processing into a single unit, using commodity hardware. This provides an extremely high ROI. We provide expert advice and professional services for storage solutions, as well as implementations and support for your operations. MooseFS was launched in 2008 as a spinoff from Gemius, a leading European company that measures internet in more than 20 countries. It has since become one of the world's most sought-after Data storage software. It is still used to store large amounts of data by Gemius' core operations. Over 300 000 events per second are gathered and analyzed every second, 24 hours a day, 7 days a weeks. Any solution we offer to our clients has been tested on a real-life Big Data Analytics work environment.

Scality offers both file and object storage solutions tailored for enterprise data management across various scales. Our service seamlessly integrates with your existing infrastructure, whether it involves conventional on-premises storage or modern cloud-native applications. From vital healthcare and financial information to sensitive government data, cherished national artifacts, and streaming video content, Scality has demonstrated its capability in safeguarding valuable assets, achieving an impressive eleven 9s of data durability for long-term security. With our commitment to reliability, you can trust that your data is in capable hands.