Backblaze vs Sync.com

What Backblaze is

Backblaze sells distinct products, most notably B2 Cloud Storage and Computer Backup. B2 is usage-billed always-hot object storage with Native and S3-compatible APIs, browser access and command-line tooling. Current public pricing starts with 10 GB free, then meters byte-hour storage, egress beyond an allowance and selected Class D transactions. Encryption, Object Lock, version history and replication are capabilities to configure—not substitutes for independent access controls and tested recovery.

What Sync.com is

Sync.com stores files with end-to-end encryption, so the provider cannot read your content. End-to-end encryption means a subpoena to the provider does not produce your files, which is why it appears in regulated and legal workflows. The cost is convenience: no server-side search or preview, and losing your password can mean losing access.

What Backblaze is built to do

S3-compatible API

Supports common S3 operations alongside Backblaze's Native API.

Usage-based storage

Bills stored bytes over time with separate egress and selected transaction rules.

Object immutability

Object Lock and Legal Hold can prevent deletion or change for governed retention periods.

Encryption and replication

Offers managed-key or customer-key SSE and configurable bucket replication.

What Sync.com is built to do

End-to-end encryption

Encrypts files client-side so the provider cannot read them.

Zero-knowledge sharing

Shares links with passwords and expiry without exposing keys to the server.

Version history

Restores previous file versions and deleted items.

Choose Backblaze if

• Backup repositories whose software has verified B2 or S3-compatible support
• Media and application objects with modeled storage, download and transaction patterns
• Immutable off-site copies configured with restricted keys, Object Lock and restore drills

Skip Backblaze if

• The workload depends on an untested Amazon S3 feature or exact behavioral parity
• Required data residency, region pairing or recovery throughput is not available and verified
• No owner exists for key rotation, retention, lifecycle, replication and restore testing

Choose Sync.com if

• People and teams storing files that must stay private.

Backblaze: pros & cons

• Low-friction object storage: Native and S3-compatible APIs work with many existing backup and application tools.
• Published usage model: Storage, egress allowance, overage and transaction classes are documented publicly.
• Data-protection controls: Optional server-side encryption, Object Lock, version history and bucket replication support resilient designs.
• Egress options: Downloads are free up to three times average monthly storage and through named CDN/compute partners.
• Not all S3 behavior is identical: Compatibility must be checked against the exact SDK, operation and application workflow.
• Encryption is a configuration decision: Official documentation says B2 data is not encrypted by default and offers optional SSE.
• Recovery cost can vary: Large restores may exceed free egress and generate transaction, network and operational costs.
• Product confusion risk: Computer Backup retention and device rules do not describe generic B2 object storage.

Sync.com: pros & cons

• Zero-knowledge encryption by default
• Canadian jurisdiction and privacy focus
• Reasonable pricing for the storage
• Encryption limits third-party integrations
• Sync client is slower than rivals
• Collaboration features are basic