Where each object storage product stands, and where it is heading. Scored on what shipped. The overview puts every angle and an overall index in one place; the map below compares any two scores. Click a product anywhere for its full scorecard.
The Object Storage Ledger scores 23 s3-compatible object storage products (21 ranked) on capability, credibility, buyer risk, lock-in and AI, using public release records only (edition 2026-10-16). Top 5 by Ledger Index out of 100: Ceph RGW (66.3), MinIO AIStor (64.1), IBM Storage Ceph (62.9), SeaweedFS (61.6), StorageGRID (61.3). The full table is below; each name links to its scorecard, and the methodology explains every score.
| # | Name | Ledger Index /100 | Capability /100 | Credibility /25 | Commercial risk /25 | Lock-in /25 | AI /20 | Archetype |
|---|---|---|---|---|---|---|---|---|
| 1 | Ceph RADOS Gateway (RGW, upstream) | 66.3 | 81.5 | 18.5 | 9 | 3.5 | Dependable builder | |
| 2 | MinIO AIStor | 64.1 | 78.6 | 16 | 16 | 4 | 7.5 | Real innovator, portfolio-gated |
| 3 | IBM Storage Ceph (formerly Red Hat Ceph Storage) | 62.9 | 81.2 | 16.5 | 11.5 | 10.5 | 3 | Dependable builder |
| 4 | SeaweedFS (open source and Enterprise Edition) | 61.6 | 69.3 | 16 | 8 | 7 | 5 | Dependable builder, open core |
| 5 | NetApp StorageGRID | 61.3 | 74 | 15.5 | 11 | 11 | 5.5 | Dependable builder |
| 6 | Cloudian HyperStore | 60 | 77 | 13.5 | 12.5 | 11 | 6.5 | Real innovator, thinly documented |
| 7 | Versity S3 Gateway (VersityGW) | 59.6 | 56.6 | 16 | 3 | 3 | Dependable builder, young | |
| 8 | VAST Data Platform | 59.5 | 68.2 | 16 | 14.5 | 14 | 8.5 | Real innovator, many items pending |
| 9 | Dell ObjectScale (formerly ECS) | 59.1 | 71.9 | 14.5 | 13 | 13 | 7 | Dependable builder, thinly documented |
| 10 | Everpure FlashBlade (formerly Pure Storage, Purity//FB) | 58.9 | 63 | 16 | 12 | 14.5 | 7 | Dependable builder, hardware-bound |
| 11 | NooBaa (Multicloud Object Gateway engine) | 58.5 | 58.2 | 16 | 6.5 | 3 | Dependable builder, inside ODF | |
| 12 | Red Hat OpenShift Data Foundation (RGW and the Multicloud Object Gateway) | 58.2 | 68.1 | 16 | 13.5 | 12 | 4 | Dependable builder, OpenShift-bound |
| 13 | Nutanix Objects (Nutanix Unified Storage) | 57.7 | 63.9 | 16.5 | 12.5 | 13.5 | 6.5 | Dependable builder |
| 14 | Scality RING | 57.4 | 71.9 | 13.5 | 13 | 11.5 | 8 | Vision-led, thinly documented |
| 15 | RustFS | 56.4 | 59.6 | 14.5 | 10.5 | 6 | 4 | Sharp opportunist, young product |
| 16 | Hitachi Content Platform and VSP One Object | 54.7 | 67 | 13.5 | 15 | 14 | 5 | Integrated stack |
| 17 | Qumulo Core S3 API | 54.4 | 58.5 | 15.5 | 14 | 11.5 | 5.5 | Sharp opportunist |
| 18 | Scality ARTESCA | 54.3 | 62.5 | 14.5 | 12.5 | 11 | 2.5 | Sharp opportunist |
| 19 | Quantum ActiveScale | 51.6 | 62 | 14.5 | 15 | 14 | 4 | Dependable builder |
| 20 | DataCore Swarm (formerly Caringo) | 50 | 59.8 | 14 | 12 | 11 | 2.5 | Sharp opportunist |
| 21 | Zenko CloudServer (Scality open-source S3 server) | 49.9 | 46.6 | 15.5 | 4.5 | 2 | Dependable builder, maintenance-led |
Capability /100. Ten domains scored 0 to 5 against fixed anchors, weighted to 100. The buyer lens changes the weights, not the domain scores. History from 2015 uses the same anchors, so a line rises only when something ships.
Credibility /25. Cadence, roadmap transparency, say-do record, velocity and lifecycle stability, from the 2023 to 2026 release record.
Commercial risk and technical lock-in /25 each. Lower is better, so these axes are drawn reversed. Buyer risk is the two added together, out of 50.
AI leverage /20. Four strands scored per year: AI workload infrastructure, AI platform stack, AI-assisted operations and agent openness. Only GA counts; previews count half a step at most.
Ledger Index /100. A weighted blend of all parts, always shown with them. Before 2023 only capability and AI move; the other parts are held at today's values.
Idea-to-need index. Share of vision-led items among vision, customer and market-window items. 0 means demand-pulled, 1 means thesis-pushed. It is a direction, not a grade.