Best Open Source Cryptography Software 2026

Cryptography Software

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Browse free open source Cryptography software and projects below. Use the toggles on the left to filter open source Cryptography software by OS, license, language, programming language, and project status.

MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

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Taking the Paper Out of Work
For organizations that need powerful ECM and document automation software

The Square 9 AI-powered intelligent document processing platform takes the paper out of work and makes it easier to get things done with digital workflows.

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1

WinSCP

WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.

WinSCP is a popular free file manager for Windows supporting SFTP, FTP, FTPS, SCP, S3, WebDAV and local-to-local file transfers. A powerful tool to enhance your productivity with a user-friendly interface and automation options like .NET assembly or batch file scripting. Use WinSCP also for file editing, directory synchronization and site management. WinSCP is open-source and well documented. It is available in English and many other languages.

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209 Reviews

Downloads: 223,559 This Week

Last Update: 2026-02-02
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2

Browser for Tor with Onion Router

Browser for Tor based on Dooble & Vidalia as integrated Addon

Tor now plugs into the Browser. Dooble Web Browser, a secure open source userfriendly tool to explore the web secure over Tor. Steer Tor in the Browser (in Settings/Proxy/Tor) with an Add-On based on Vidalia. Just start the Add-On "Tor" in the Browser Add-On-Menu and in Settings/Proxy.

Downloads: 23 This Week

Last Update: 2014-09-07
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3

File Encoder Application

Java application for encryption

Java application for encryption with a GUI. It is based in the XOR symetric encryption combined with a pseudorandom resorting of the bytes. Strenth and time to encrypt/decyrpt per MB adapted to size of input file. Multithread. zoom Multilanguage Dark mode JDK-17 compatibility It includes detailed documentation in English, Spanish and Catalan.

Downloads: 17 This Week

Last Update: 2025-10-15
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4

CSC_Crypt

This is an experimental program that encrypt/decrypt/divide/join files. This program uses a new algorithm made by me, this algorithm is experimental and I working on it, every day this algoritm will be better.

Downloads: 0 This Week

Last Update: 2013-03-07
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Virtual data rooms designed to achieve better outcomes
Now you can get ready for and experience success in M&A, divestments, capital raising, restructure, IPOs, tenders and more

Ansarada is a SaaS company that provides world-leading AI-powered Virtual Data Rooms and dealmaking tools. These tools include advanced AI insights and automation, next level Q&A and collaboration, plus pre-built, digitized and customizable workflows and checklists - known as Pathways - for M&A, capital raising, business audits, tenders and other high stakes outcomes.

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5

INTIX-JSIGNER

INTIX-JSIGNER is a java web application for signing documents (XML and/or PDF) of unattended way and in the server side. It has as main modules the following: Authentication, XML and PDF Signing and Keys and Certificates Management.

Downloads: 0 This Week

Last Update: 2013-04-19
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6

Recsig

Recsig is a Joomla component intended to collect digital signatures for Popular Legislative Initiatives (PLI). The component comply with all legal requirements so that collected signatures can be considered valid for PLI by the Spanish law.

Downloads: 0 This Week

Last Update: 2013-05-02
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