Obstor

7.3easy start · #2 of 23
in Storage Replication Software

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on api, Linux, Mac, self-hosted, Web, Windows.

Obstor is ranked #2 of 23 in storage replication software on The Geeks Club. It runs on API, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Obstor plans and pricing

All plans

Open source Free Apache 2.0 license · self-hosted obstor.net · 30 Sept 2026

Compared on storage replication software

Replication mode: both
Replication scope: mixed
Continuous replication: Yes
Failover orchestration: Yes
Deployment model: on_premises
Multi-site replication: Yes

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The record

Product: Obstor is an Apache 2.0 licensed, S3-compatible object storage server with built-in SFTP support.
S3 compatibility: Obstor works with S3 SDKs, CLI tools, and applications without code changes.
Distributed storage: Objects are automatically sharded and replicated across connected nodes, with each object stored in at least two global locations.
SFTP: Obstor includes a native SFTP server, and SFTP-uploaded files are stored as S3 objects.
Encryption: Obstor supports SSE-C and SSE-S3 server-side encryption, including KMS integration.
Encryption primitives: Obstor uses HMAC-SHA-256 for key derivation and AES-256-GCM or ChaCha20-Poly1305 for authenticated encryption.
Erasure coding: Erasure coding protects data against drive and node failures with configurable parity.
Versioning: Obstor provides object versioning with lifecycle policies for history, recovery, and retention requirements.
Notifications: Event notifications can be pushed to Kafka, NATS, AMQP, Redis, PostgreSQL, Elasticsearch, and webhooks.
Access control: Obstor provides IAM with users, groups, policies, and service accounts using S3 and AWS IAM policy syntax.
Deployment: Installation options include a single binary, Docker, Kubernetes Helm chart, or building from source.
Supported systems: Official documentation provides standalone instructions for macOS, GNU/Linux, and 64-bit Windows.
Standalone limitations: Standalone servers are intended for development and evaluation; versioning, object locking, and bucket replication require distributed deployment with erasure coding.
Compose limit: The Docker Compose example creates four distributed instances and supports up to 16 Obstor services.
Price from: Free

Where it ranks on The Geeks Club

Best Storage Replication Software in 2026#2 of 23

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Sources

obstor.net· checked 30 Sept 2026
obstor.net/docs/protocols/sftp· checked 30 Sept 2026
obstor.net/docs/security· checked 30 Sept 2026
github.com/obstor/obstor· checked 30 Sept 2026
obstor.net/docs/orchestration/docker-compose· checked 30 Sept 2026