Belfort vs Microsoft SEAL: Side-by-Side Comparison (2026)

Belfort: Hardware-accelerated FHE platform for processing data without decrypting it. built by Belfort. Core capabilities include Fully Homomorphic Encryption (FHE) acceleration via dedicated hardware, Processing of sensitive data without decryption at any stage, Purpose-built streaming architecture for encrypted workloads..

Microsoft SEAL: Microsoft SEAL is an open-source homomorphic encryption library that enables arithmetic computations on encrypted data without decryption, supporting privacy-preserving applications across multiple platforms..

Both serve the Confidential Computing market but differ in approach, feature depth, and target audience.

Belfort is developed by Belfort. Microsoft SEAL is open-source with 3,862 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Belfort and Microsoft SEAL serve similar Confidential Computing use cases: both are Confidential Computing tools, both cover Encryption. Key differences: Belfort is Commercial while Microsoft SEAL is Free, Microsoft SEAL is open-source. Review the feature comparison above to determine which fits your requirements.