Best Free Software-Defined Storage (SDS) of 2026

Compare the Top Free Software-Defined Storage (SDS) as of April 2026

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What is Free Software-Defined Storage (SDS)?

Software-Defined Storage (SDS) is a storage architecture that separates the software control layer from the physical storage hardware, allowing organizations to manage storage resources — like capacity, performance, replication, and provisioning — through a unified software layer rather than being locked into specific hardware arrays. These solutions pool storage across commodity servers or diverse storage devices and abstract them into flexible, dynamic storage services. SDS enables policy-based automation, easier scalability, hardware vendor independence, and rapid provisioning. It supports block, file, and object storage interfaces and is well suited for hybrid cloud, edge, and modern data-driven environments. Ultimately, SDS empowers IT teams to treat storage as a programmable resource, reduce costs, increase agility, and adapt quickly to changing data demands. Compare and read user reviews of the best Free Software-Defined Storage (SDS) currently available using the table below. This list is updated regularly.

1

QuantaStor

OSNexus

QuantaStor is a unified Software-Defined Storage platform designed to scale up and out to make storage management easy while reducing overall enterprise storage costs. With support for all major file, block, and object protocols including iSCSI/FC, NFS/SMB, and S3, QuantaStor storage grids may be configured to address the needs of complex workflows which span sites and datacenters. QuantaStor’s storage grid technology is a built-in federated management system which enables QuantaStor servers to be combined together to simplify management and automation via CLI and REST APIs. The layered architecture of QuantaStor provides solution engineers with unprecedented flexibility and application design options that maximizes workload performance and fault-tolerance for a wide range of storage workloads. QuantaStor includes end-to-end security coverage enabling multi-layer data protection “on the wire” and “at rest” for enterprise and cloud storage deployments.

6 Ratings

Starting Price: $/TB based on scale

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2

croit

croit

croit is a software company specialized in enterprise storage operations, providing 24/7 expert support for Ceph and Proxmox environments. We help organizations run, scale, and troubleshoot mission-critical clusters with guaranteed response times and deep upstream expertise. At the core of our offering is the croit software platform, designed to make Ceph easier to operate at scale. It delivers real-time monitoring, automated health analysis, and actionable insights, enabling teams to prevent issues, reduce operational complexity, and operate Ceph with confidence in production.

Starting Price: Under $500/mo per cluster

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3

MooseFS

Saglabs SA

MooseFS is a breakthrough concept in the Big Data storage industry. It allows us to combine data storage and data processing in a single unit using commodity hardware thereby providing an extremely high ROI. Through this innovative approach, we provide professional services and expert advisory for storage solutions as well as implementation and support for all your operations. MooseFS, which was introduced in 2008 as a spin-off of Gemius (a leading European company which measures internet in over 20 countries), went on to become one of the most sought after Data storage software for companies worldwide. It is still being used to store huge amounts of data for Gemius core operations, where over 300 000 events are gathered and processed per second, for 24 hours and 7 days a week. Therefore, any solution we present to our customers has been tested in real-life work environment involving Big Data Analytics.

Starting Price: $/TiB based on scale

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4

Scality

Scality

Scality provides file and object storage for enterprise data management deployments of all sizes. We adapt to your environment. Traditional on-prem storage? No problem. Storage for modern cloud-native applications? We’ve got you covered. Whether it’s critical healthcare or financial data, government intelligence, digitized national treasures, streaming video content or any other valued asset — Scality has a proven track record of ensuring eleven 9s data durability and long-term protection.

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