GnuPG Alternatives (September 2025)

Mailfence is the only secure and private email service that gives you control. A free, interoperable encrypted email service protected by Belgian privacy law.

Encrypt ANY Business or Personal Email in a few minutes. No need to switch email providers. Free encrypted email for Gmail, Yahoo, Microsoft.

Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Sylpheed - Sylpheed はシンプル、軽量かつ高機能で使いやすい、無料のメールソフトです。Sylpheed は Windows から Linux まで様々なプラットフォームに対応しています。

KeePass is a free open source password manager. Passwords can be stored in an encrypted database, which can be unlocked with one master key.

Standard Notes helps you gain control in a world that often feels out of control. Protect your life's work with end-to-end encryption, advanced security measures, and unmatched privacy controls.

AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

Tabby is a free and open source SSH, local and Telnet terminal with everything you'll ever need.

The Beeble Project is email and online cloud storage platform with unprecedented security and privacy without third party access.

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.

VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files.

Free X server for Windows with tabbed SSH terminal, telnet, RDP, VNC, Xdmcp, Mosh and X11-forwarding. Portable or installer version.

SSH Key Management software that synchronises SSH Keys with your authorised_keys files across your fleet of servers. Manage Linux user accounts, sudoers files and authorised_keys on Linux servers.

Send encrypted email and attachments to any email address, without requiring clients to signup for a new account. Clients can send you secure messages and files with a simple link click.

Dia is free (open source) drawing software. Sketch your favorite structured diagrams! Windows version available as a free download.

Discover Echoworx, the industry-leading provider of cutting-edge email encryption to safeguard your sensitive communications

Bitwarden makes it easy for businesses and individuals to securely generate, store, and share passwords from any location, browser, or device. Create your free Bitwarden account today.

Encrypt Dropbox, Google Drive, and any other cloud. Cryptomator is free and open source.

K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email

Secure E-Mail Boolebox: to send and receive encrypted messages and attachments using the advanced security features of Boolebox. Learn more!

Secure email encryption helps protect individuals, SMBs, and Enterprise organizations. Learn more about compliance & secure email encryption.

Mailprotector has the complete email security products your users need to cover all three comprehensive pillars: email security, encryption, and privacy.

Virtru data encryption protects data, through email and file-sharing, Cloud, SaaS, CRM solutions and across internal and external ecosystems.

IBM Guardium Key Lifecycle Manager centralizes, simplifies and automates encryption key management.

Easy to use advanced file encryption software for your business and personal data with cloud storage, mobile encryption and password manager. Get a free trial now

Let's Encrypt is a free, automated, and open certificate authority brought to you by the nonprofit Internet Security Research Group (ISRG). Read all about our nonprofit work this year in our 2023 Annual Report.

GNU Octave is a programming language for scientific computing.

Hushmail - Encrypted Email & Secure Web Forms. Our healthcare plans come configured for HIPAA compliance right out of the box.

Easy to Install and manage, carrier class Mail Server Software with modern fast WebMail interface, spam protection and much more.

A powerful email server that blocks 99% of junk emails. It also enables encrypted emailing with large sized file sharing and helps in preventing IP leakages

Bitwarden Secrets Manager enables developers and DevOps teams to centrally store, manage, and deploy secrets at scale. Start a free trial today!

GlobaLeaks - Free and Open-Source Whistleblowing Software

OpenFOAM is the leading free, open source software for computational fluid dynamics (CFD), owned by the OpenFOAM Foundation and distributed exclusively open source under the General Public...

All-in-one platform to securely manage application configuration and secrets across your team and infrastructure. Used by Fortune 500 enterprises, international governments, and fastest-growing startups. Save time and boost security.

Send HIPAA compliant emails free for 14 days.

Free SSH key manager that helps you manage access and authorization across your instances and servers across your multi-cloud infrastructure.

Emails, calendars, contacts, tasks, chat and more

WinSCP is a free file manager for Windows supporting FTP, SFTP, S3 and WebDAV.

Passwork provides an advantage of effective teamwork with corporate passwords in a totally safe environment. Employees can quickly access all their passwords, while the rights and actions are closely supervised and managed by local system administrators.

ManageEngine Password Manager Pro, on-premise enterprise password management software for secure vaulting & secrets management. Try it now for free!

pgAdmin - PostgreSQL Tools for Windows, Mac, Linux and the Web

Managed File Transfer Built with Security Top of Mind, Titan MFT Offers Unlimited Scalability, Automation and Azure, AWS or On-Site Implementation

Stop forgetting passwords now. With our free password manager, you can log in securely, autofill forms in a second, and use your passwords wherever you go.

Zimbra: A Cloud-Hosted Collaboration Software and Email Platform That Integrates With Proprietary Business Solutions

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

The only Privacy Suite for WordPress - Get ready for GDPR, ePrivacy, CCPA and more. Brought to you by Really Simple SSL and the Complianz Team.

Our email encryption software allows you to work without worrying about your data security. Choose Sealit and make sure your business is protected.

Protect your sensitive information with our password manager. Stop data breaches, secure apps, and autofill passwords with 1Password.

Microsoft SEAL is an easy-to-use and powerful open-source homomorphic encryption library that enables running computations directly on encrypted data.

We're experts in automated, Scalable, Integrated Digital Certificates Solutions, SSLs/TLSs, managed PKI, IoT, authentication & email security. Learn more about our identity management services.

Unlock and freely use your data with a Secure ChatGPT Tool for AI and data analytics while safeguarding security and meeting privacy regulations

Secure Windows or Linux mail server that includes chat, calendaring and contacts and offers a cost-effective alternative to Microsoft Exchange.

RoboForm Password Manager. Stay secure, productive, and efficient with our seamless free password manager and form filling solution.

EnterpriseDT offers secure, robust, and cost-effective secure file transfer solutions encompassing both SFTP and MFT protocols. This includes CompleteFTP and CompleteFTP Enterprise MFT products specifically tailored for Windows platform.

SSL.com provides SSL/TLS & digital certificates to secure and encrypt data with our 4096-bit SSL/TLS Certificates, trusted by all popular browsers.

Cisco Secure Email Encryption Service gives senders enhanced security and reliable controls for traditional email tools.

AWS CloudHSM provides total access management control and protection for your encryption keys with secure and compliant hardware security modules (HSMs).

BTCPay Server is a self-hosted, open-source cryptocurrency payment processor. It's secure, private, censorship-resistant and free.

Encrypted private vault is the easiest way to protect your files and keep them accessible. Secure all your files in a click with NordLocker.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

A free and open source software to merge, split, rotate and extract pages from PDF files. For Windows, Linux and Mac

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

An open-source universal messaging library

Free open source enterprise distributed VPN server. Virtualize your private networks across datacenters and provide simple remote access in minutes.

#1 Open Source Free Anti Spam and Antivirus software. MailCleaner is a gateway between your mail infrastructure and Internet. Block all spam.

Free desktop project scheduling and management app with Gantt chart for Windows, Linux and macOS

Fast, secure, and sustainable email services provided by email professionals. Powerful Email and Domain Hosting for businesses and organizations.

Mailtrim provides secure Free email client software with its unique team collaboration Feature and is designed to serve the mailing needs of all business

Ispmanager is a Linux-based control panel for managing dedicated and game and VPS web servers, as well as selling shared hosting

A high performance, open source universal RPC …

TortoiseHg Official Website.

The #1 Vault Alternative secures credentials, certificates and keys securely and with ease across multi-cloud environments.

The only free, fully open source and self-hosted WordPress plugin for maintaining multiple sites from one location.

SNMP .NET Component Download - SnmpSource offers users a comprehensive toolkit for quick development.

FreeShow is a free and open-source presenter software for anyone to use with ease.

Discover Chainguard's hardened, vulnerability-free container images designed to keep your infrastructure secure and efficient.

With Box KeySafe, you gain independent control of your encryption keys through our partnership with AWS KMS Key Management Services and AWS CloudHSM.

Email Encryption is an essential part of Secure Cloud. With Zix, we send encrypted email automagically in the background. No extra steps are required, ever.

Keybase is for keeping everyone's chats and files safe, from families to communities to companies. MacOS, Windows, Linux, iPhone, and Android.

Free SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.

The Vormetric Data Security Platform makes it easy and efficient to manage data-at-rest security across your entire organization.

Learn how AWS Key Management Service (KMS) provides you with logs of key usage to help you meet your regulatory and compliance needs.

Advanced Installer is a Windows installer authoring tool for installing, updating, and configuring your products safely, securely, and reliably.

Australian computer programmer

Swiss based end-to-end encrypted distributed cloud with blockchain – providing the world’s most Private & Secure cloud storage & file transfer for business and personal use.

Keeper® is the top-rated password and secrets manager for protecting businesses and families from cyber threats. Try free now!

Secure your business with total messaging control. Cybonet stops the majority of malicious email threats at your network's perimeter while simultaneously providing a range of additional options for comprehensive security and messaging control.

Send large files free via email and links. Paid accounts share files of any size. Fast secure online file transfer using our file sharing site & apps.

SendSafely lets you easily exchange encrypted files and information with anyone on any device. Let us take the headache out of secure file exchange.

We believe our research will eventually lead to artificial general intelligence, a system that can solve human-level problems. Building safe and beneficial AGI is our mission.

The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe

Bazaar version control system: easily manage source code on Windows, Ubuntu, GNU/Linux, and Mac OS X

Free Tools for WordPress websites. SEO, Security, and Social reports.

With Boolebox cyber security solutions we protect your data everywhere, also in the most commonly used platforms. See more!

Cygwin Terminal emulator

Autowriter AI is the smartest and easiest way to generate SEO-optimized, unique, plagiarism-free content for your blogs, ads, emails, and website. Harness the power of AI to create content 10X