Compare the Top Free Encryption Software as of January 2026

What is Free Encryption Software?

Encryption software protects sensitive data by converting it into unreadable code that can only be accessed with the correct decryption key. It secures files, communications, applications, and entire systems from unauthorized access, cyberattacks, and data breaches. These tools use algorithms like AES, RSA, and elliptic-curve cryptography to safeguard data at rest, in transit, or in use. Many encryption platforms offer key management, user authentication, and compliance features to meet industry regulations and enterprise security requirements. Overall, encryption software is essential for maintaining privacy, ensuring data integrity, and protecting information across digital environments. Compare and read user reviews of the best Free Encryption software currently available using the table below. This list is updated regularly.

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    CLEAR

    CLEAR

    Quantum Knight

    The CLEAR™ Cryptosystem is a FIPS-140-3 Validated programmable state-of-the-art encryption SDK for securing files, streaming video, databases, and networks. Compatible with all types of modern computer platforms, CLEAR™ is an easy to integrate, turn-key tool for boosting existing cybersecurity with Post Quantum (PQC) strength. Apply CLEAR™ Cryptosystem anywhere you want to secure data in your own digital ecosystem. CLEAR™ is a single file with a smaller footprint than a single image on a smart phone. It can be deployed online or offline and works on more than 30 types of modern operating systems and embedded equipment. Designed for maximum efficiency and simplicity, CLEAR can dramatically reduce energy usage at scale, relative to other legacy cryptography.
    Starting Price: Free
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  • 2
    QuantaStor

    QuantaStor

    OSNexus

    QuantaStor is a unified Software-Defined Storage platform designed to scale up and out to make storage management easy while reducing overall enterprise storage costs. With support for all major file, block, and object protocols including iSCSI/FC, NFS/SMB, and S3, QuantaStor storage grids may be configured to address the needs of complex workflows which span sites and datacenters. QuantaStor’s storage grid technology is a built-in federated management system which enables QuantaStor servers to be combined together to simplify management and automation via CLI and REST APIs. The layered architecture of QuantaStor provides solution engineers with unprecedented flexibility and application design options that maximizes workload performance and fault-tolerance for a wide range of storage workloads. QuantaStor includes end-to-end security coverage enabling multi-layer data protection “on the wire” and “at rest” for enterprise and cloud storage deployments.
    Starting Price: $/TB based on scale
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  • 3
    IceIT

    IceIT

    Quantum Knight, Inc

    IceIT is an always-free desktop utility for encrypting files quickly and easily using quantum-strength encryption. In addition to the community edition, IceIT includes available commercial upgrades for creating always-on sharing and private networks that allow securing files and folders across multiple users and groups, without the need for a centralized cloud account. IceIT frees you to confidently use your email, text message, and legacy communication mediums without worry. Got backups that you want to protect? Just IceIT!
    Starting Price: 0
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