Backblaze B2 vs Sync.com

Detailed side-by-side comparison

Backblaze B2

Free

Backblaze B2 is an S3-compatible object storage service designed for developers and businesses who need affordable, scalable cloud storage with programmatic access. It offers unlimited capacity with simple pricing that's significantly cheaper than major cloud providers, making it ideal for backup systems, content delivery, and application data storage.

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Sync.com

Free

Sync.com is a privacy-focused cloud storage service that uses zero-knowledge encryption to ensure complete data security for individuals and teams. It provides traditional file syncing, sharing, and collaboration features wrapped in industry-leading encryption, making it suitable for users who prioritize data privacy and compliance requirements.

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Feature Comparison

Feature	Backblaze B2	Sync.com
Primary Use Case	Object storage for developers and applications with S3-compatible API access, ideal for backups, archives, and programmatic data storage	Personal and business file storage with desktop/mobile sync, designed for everyday file management and secure collaboration
Security & Privacy	Standard encryption in transit and at rest with data redundancy across multiple data centers, but Backblaze has access to encryption keys	Zero-knowledge end-to-end encryption where only the user holds encryption keys, ensuring complete privacy with GDPR and HIPAA compliance
Integration & API	Full S3-compatible API for seamless integration with development tools, backup software, and applications that support S3 protocol	Limited API with focus on native apps for desktop and mobile; fewer third-party integrations compared to developer-focused solutions
Data Transfer & Egress	Generous free egress bandwidth (up to 3x daily storage amount), with predictable costs for additional transfers beyond the free tier	No specific egress fees or bandwidth limitations, but sync speeds may be slower than competitors; unlimited file transfers within plans
File Management	Lifecycle rules for automated data management and tiering, designed for large-scale object storage with bucket-based organization	Traditional folder structure with automatic syncing, file versioning, real-time collaboration, and ransomware rollback capabilities
Sharing & Collaboration	Public/private bucket access controls and shareable URLs, primarily designed for application access rather than user-friendly file sharing	Secure file sharing with password protection, expiration dates, and collaboration features designed for team workflows and external sharing

Pricing Comparison

Both services offer free entry tiers, with Backblaze B2 charging $6/TB/month for storage plus transaction fees, while Sync.com offers 5GB free and paid plans starting at $8/month per user for 2TB. Backblaze B2 provides better value for large-scale storage and developer use cases, while Sync.com offers better value for individual users and small teams needing user-friendly file sync with premium security.

Verdict

Choose Backblaze B2 if...

Choose Backblaze B2 if you need affordable, S3-compatible object storage for application development, automated backups, content delivery, or large-scale data archiving with API access. It's the best choice for developers, IT professionals, and businesses seeking cost-effective programmatic storage.

Choose Sync.com if...

Choose Sync.com if you prioritize privacy and security for personal or business file storage, need zero-knowledge encryption for compliance requirements, or want a user-friendly alternative to Dropbox/Google Drive with superior data protection. It's ideal for privacy-conscious users, healthcare/legal professionals, and teams handling sensitive information.

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Cloud Storage

Pros & Cons

Backblaze B2

Pros

+ Significantly cheaper than AWS S3, Azure, and Google Cloud Storage
+ Simple, transparent pricing with no hidden fees
+ Easy migration from other S3-compatible services
+ Generous free egress bandwidth allowance

Cons

- Fewer global data center locations compared to major cloud providers
- Limited advanced features compared to AWS S3 ecosystem
- Smaller partner ecosystem and third-party integrations

Sync.com

Pros

+ Industry-leading privacy with zero-knowledge encryption
+ Generous free storage tier (5GB)
+ Excellent security features including 2FA and ransomware rollback
+ Intuitive interface with robust sharing controls

Cons

- Slower sync speeds compared to some competitors
- Limited third-party app integrations
- No native Linux desktop client