FlowCrypt Alternatives and Similar Software

Alternatives to FlowCrypt for Web, Windows, Mac, Linux, iPhone and more. Filter by license to discover only free or Open Source alternatives. This list contains a total of 18 apps similar to FlowCrypt.

FlowCrypt (formerly CryptUp) is the easiest PGP encryption for Gmail. It behaves just like standard email, except it's encrypted. If your looking for more info about FlowCrypt like screenshots, reviews and comments you should visit our info page about it. Below you find the best alternatives.

The list of alternatives was last updated: 9/4/2017 10:06:00 PM

Alternatives to FlowCrypt for all platforms with any license

  • ProtonMail

    Secure email with absolutely no compromises, brought to you by MIT and CERN scientists. Swiss Based ProtonMail is incorporated in Switzerland and our servers are located in Switzerland. We are outside of US and EU jurisdiction and all user data is protected by strict Swiss privacy laws. Zero Access Because of our end-to-end encryption, your data is already encrypted by the time it reaches our servers.

    Freemium $ $ $ Web Android iPhone iPad

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  • Tutanota

    Tutanota is a free and open source web-mail client that focuses on privacy and security. It has open source iOS and an Android apps. The Android app is published on F-Droid (which means the app does not use Google's push notification system) making it a great option if you want to de-Google your life. All data is stored encrypted and can not be searched, i.e. for commercial use. It offers dead easy end-to-end encryption. 1 GB of storage is free for everyone.

    Free Personal $ $ $ Open Source Web Android iPhone iPad

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  • Enigmail

    Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the OpenPGP standard. Sending and receiving encrypted and digitally signed email is simple using Enigmail. When starting it for the first time, you are guided through the basic setup. We also prepared a new users guide that explains how to use OpenPGP.

    Free Open Source Mac Windows Linux GnuPG Thunderbird ... SeaMonkey

    No features added Add a feature

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  • Kolab Now

    Kolab Now, formerly MyKolab, is a fully featured secure collaboration and communication service that is easy to use on any device. Whether you are a legal counsel, journalist, diplomat or just a regular user: Kolab Now empowers your collaboration and communication, wherever you are. Thanks to a unique mix of usability and security with exclusive hosting in Switzerland, Kolab Now allows law firms, SMEs and other organisations to focus on their core business.

    Commercial Open Source Web DAVdroid

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  • MsgSafe.io

    MsgSafe.io provides private, encrypted, online communication with layers of security you can trust. With rocketing growth online and improvements to computer capacity, governments and private sector are collecting and sharing information on every facet of people’s lives. MsgSafe.io is dedicated to actively improving privacy protection with innovative technology.

    Freemium Web Android iPhone S/MIME OpenPGP

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  • GPGMail

    GPGMail is a PGP plugin for Apple Mail. It brings the functionality to sign, verify, encrypt and decrypt mails using the OpenPGP standard.

    Commercial $ $ $ Mac GPGTools

    No features added Add a feature

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  • SCRYPTmail

    SCRYPTmail is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain. Public Source Code - all source code is available for public audit, this include front and back end code. True Zero Data Knowledge - because we also encrypt sender and recipient there is zero information third parties can learn if our server ever get compromised.

    Freemium Web

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  • Secure Gmail

    An extension to send secure, encrypted messages through Gmail. SecureGmail encrypts and decrypts emails you send in Gmail. This happens all on your machine, and the unencrypted text never reaches Google servers. This is useful if you don't want anyone but the intended recipient to ever read your email (i.e. companies, governments, etc.) Open source With any security project, community involvement is the key to helping identify flaws and verify the what the app is actually doing.

    • uses shared password (symmetric) encryption Guest • Sep 2017 Disagree   Agree

    Free Open Source Mac Windows Linux Chrome Gmail

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  • Runbox

    (Official description) Runbox provides secure email communication with Perfect Forward Secrecy SSL connections, Extended Validation, and options for OpenPGP encryption. We are committed to protecting your data in accordance with Norway's strong privacy regulations, preventing unauthorized access to your email.

    Commercial $ $ $ Web OpenPGP

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  • WebPG

    WebPG is a free, open source suite of tools to bring OpenPGP (GnuPG/PGP, gpg, gnupg) to the browser, in an effort to make cryptographic methods usable, safe and accessible to the common man. WebPG encompasses several projects, from the backend technology that interfaces with OpenPGP, to the user interface utilities that bring those methods to the browser.

    Free Open Source Mac Windows Linux Chrome Thunderbird ... SeaMonkey Chromium Firefox OpenPGP

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  • AnonymousSpeech

    Professional anonymity provider for secure anonymous email. Anonymous Domain and Hosting Offshore, Anonymous Surfing, SSL, Time Delayed, Bulk Email and many more functions.

    Freemium Web

  • Lockbin

    Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.

    Freemium Mac Windows Linux Android Android Tablet

    No features added Add a feature

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  • Walnut Secure Email

    Walnut Secure Email is P2P, person to person or end to end secure mail application that protects all of end-user existing accounts, including Gmail, Yahoo Mail, Microsoft Hotmail, live.com, Outlook and hosted addresses, and corporate mail. It supports servers that works on IMAP/ SMTP protocol.

    Commercial Windows Linux Android iPhone Blackberry ... Android Tablet iPad

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  • Sendinc

    Secure email made simple Sendinc enables anyone to send and receive military-grade encrypted email in minutes and requires no special technical expertise. There is no required software to purchase, download, or install. There are no keys to generate, publish, or maintain. And anyone can use Sendinc to transmit and receive secure messages for free. Sendinc makes email encryption accessible and easy for everyone.

    Commercial Web

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  • Mynigma

    Mynigma is a new kind of email client with built-in encryption.

    • Discontinued Has not been updated since September 2016 and website has no content.

    Free Personal Mac iPhone iPad

    No features added Add a feature

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