Compare the Top Free Encryption Software as of April 2025

What is Free Encryption Software?

Encryption software allows companies to protect and secure data using cryptography to protect valuable files and sensitive data and enhance security. Compare and read user reviews of the best Free Encryption software currently available using the table below. This list is updated regularly.

  • 1
    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
    Xecrets Ez

    Xecrets Ez

    Axantum Software AB

    Xecrets Ez is an easy to use personal desktop application for file encryption available for Windows, Mac and Linux. It is compatible with AxCrypt, in fact it is based on the exact same code, but is less complex and is entirely focused on delivering the core functionality needed without the bells and whistles. For personal daily use it's a great alternative to AxCrypt at a significantly lower cost. Xecrets Ez does not require installation, privileges or Internet. It allows you to encrypt, decrypt and open files for editing with single clicks or drag and drop with a clean and simple user interface. It is a fully integrated frontend to Xecrets Cli, an open source and free command line program that does all the heavy lifting with encryption, decryption and secure wiping. The command line can also be downloaded and used separately for scripting and integration into other software.
    Starting Price: €15/year
  • 4
    Tresorit

    Tresorit

    Tresorit

    End-to-end encrypted file sync & sharing Tresorit is the ultra-secure place in the cloud to store, sync and share files easily from anywhere, anytime. Tresorit is powered by end-to-end encryption, therefore it seals your files away from internal data breaches and hackers. All the data is securely stored according to the GDPR in Europe in Microsoft Azure datacenters. Manage who can add, edit or only view the data you shared. Team members can securely access the updated files using their browser, desktop, or mobile device, wherever they are. Files can be shared with the same secure manners outside your company as well. Replace risky email attachments with ultra-secure share links. Thanks to end-to-end encryption, nothing leaves your device unencrypted, meaning only you and your recipient can open the files. Utilize the new Content Shield features for your Business to secure collaboration with external parties. Read more here: https://tresorit.com/tresorit-content-shield
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    Starting Price: $10.42/month
  • 5
    Proton Mail

    Proton Mail

    Proton AG

    Proton Mail is incorporated in Switzerland and all our servers are located in Switzerland. This means all user data is protected by strict Swiss privacy laws. All emails are secured automatically with end-to-end encryption. This means even we cannot decrypt and read your emails. As a result, your encrypted emails cannot be shared with third parties. No personal information is required to create your secure email account. By default, we do not keep any IP logs which can be linked to your anonymous email account. Your privacy comes first. We believe email privacy should be available to all. That's why our code is open source and basic Proton Mail accounts are always free. You can support the project by donating or upgrading to a paid account. Proton Mail can be used on any device without software install. Proton Mail Business allows you to keep your business email address. Send and receive encrypted emails both inside and outside of your organisation.
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    Starting Price: $6.25 per user per month
  • 6
    passbolt

    passbolt

    passbolt

    Finally, a password manager built for collaboration. Secure, flexible, and automation-ready. Trusted by 10,000 organizations, including Fortune 500 companies, newspapers, governments, and defense forces. Passbolt servers are designed to be simple to install and easy to manage. Yet they are enterprise-ready and can support complex setup for high availability. Passbolt can be used from your browser or mobile phone. Sharing happens in real-time. Desktop apps are coming soon. Retrieve, store and share passwords programmatically with the JSON API. Automate at scale with Passbolt CLI. Real-time access logs. Privacy is in our DNA, but also in the DNA of European laws (to make sure we don’t change our minds). Passbolt self-hosted source code comes under an AGPL license. Yes, even the commercial version. You are free to audit it, contribute to it, and redistribute it. This is why we have a healthy community of thousands of organizations in all sectors.
    Starting Price: €45/month/10 users
  • 7
    RMail

    RMail

    RPost

    RMail® is the e-security platform by RPost®, a global leader since 2000. RMail specializes in elegantly easy to use email encryption for privacy and compliance, e-signatures, legal e-delivery proof, secure file sharing, email impostor protection, document rights management, and AI-infused services to prevent data leaks and human e-security errors. RMail’s transmission e-security services are most often used by businesspeople or business systems that send important, sensitive, or consumer-regulated information. These RMail services are generally applied to those messages where the sender needs functionality beyond standard email in terms of (a) easier to use and more automated email encryption for privacy compliance, (b) returning a verifiable proof record of who said what to whom by email, (c) assurance and peace of mind related to delivery and open status of important and time-deadline email, (d) need a timestamped proof of content delivered, (f) need to share large files securely.
    Starting Price: $7/month/user
  • 8
    HashiCorp Vault
    Secure, store and tightly control access to tokens, passwords, certificates, encryption keys for protecting secrets and other sensitive data using a UI, CLI, or HTTP API. Secure applications and systems with machine identity and automate credential issuance, rotation, and more. Enable attestation of application and workload identity, using Vault as the trusted authority. Many organizations have credentials hard coded in source code, littered throughout configuration files and configuration management tools, and stored in plaintext in version control, wikis, and shared volumes. Safeguarding and ensuring that a credentials isn’t leaked, or in the likelihood it is, that the organization can quickly revoke access and remediate, is a complex problem to solve.
  • 9
    Cryptomator

    Cryptomator

    Skymatic GmbH

    Put a lock on your cloud. With Cryptomator, the key to your data is in your hands. Cryptomator encrypts your data quickly and easily. Afterwards you upload them protected to your favorite cloud service. Take the security of your data into your own hands. Cryptomator is a simple tool for digital self-defense. It allows you to protect your cloud data by yourself and independently. Most cloud providers encrypt data only during transmission or they keep the keys for decryption for themselves. These keys can be stolen, copied, or misused. Thanks to Cryptomator, only you have the key to your data in your hand. Cryptomator allows you to access your files from all your devices. It's easy to use and integrates seamlessly between your data and the cloud. Cryptomator's technology meets the latest standards and encrypts both files and filenames with AES and 256 bit key length. To start with Cryptomator, you assign a password for a folder - we call it a vault - within your cloud. That is all.
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