Communication


  • Tutanota

    Free Personal Web Android iPhone iPad F-Droid Website

    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.

    Easy - one password for everything
    Tutanota wants to provide the easiest-to-use and most secure email client. You do not have to fiddle with multiple passwords for signing in and for encryption/decryption. The state-of-the-art encryption technology handles all the encryption and decryption complexities. Still: Your password only belongs to you. It is being hashed and salted locally before being transmitted to the servers.

    Only you with your password have access to your encrypted data, profiling is impossible. Tutanota combines security with ease-of-use so that everybody can use end-to-end encryption. Now you can take back your privacy easily!

     

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  • FireChat

    Free Android iPhone Android Tablet iPad Website

    Chat "off-the-grid" with people around you – even if there is no Internet connection or mobile phone coverage.

     

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  • Wire

    Freemium Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Software as a Service (SaaS) Website

    Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption.

    Why Wire?

    • Always-on end-to-end encryption
    • 1:1 and group messaging
    • Voice call
    • Video conference
    • Screen-sharing
    • File-sharing
    • Searchable conversations
    • Guest Rooms (external collaboration)
    • Advanced team management
    • iOS, Android & Desktop support
    • Available on desktop, mobile, and web app
    • Synced in real-time across all devices

     

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  • Shazzlemail

    Free Personal Mac Windows Linux Android iPhone Website

    ShazzleMail is the first privacy-protective and surveillance-resistant secure email service.

     

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  • Tox

    Free Mac Windows Linux Android Android Tablet ... BSD Website

    Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

     

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  • Telegram

    Free Mac Windows Linux Web Windows Mobile ... Android iPhone Blackberry Android Tablet BSD Windows Phone iPad Apple Watch Android Wear PortableApps.com Haiku FreeBSD Website

    Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.

     

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  • ProtonMail

    Freemium Web Android iPhone iPad Website

    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. We have no access to your messages, and since we cannot decrypt them, we cannot share them with third parties.

    Backwards Compatible
    ProtonMail works out of any modern web browser, there is nothing to install. We are also backwards compatible with other email providers so you can continue sending and receiving emails from friends who are not using ProtonMail.

    Forever Free
    We believe privacy is a fundamental human right and should be available for everyone. That's why we offer multi-tiered pricing including a free version that anyone can use. Let's bring privacy back to the people!

    Fully Anonymous
    We do not log IP addresses or require any personal information to sign up. We accept bitcoin and cash payments for paid accounts to ensure even paid account users have complete privacy.

    Cross Platform
    ProtonMail works on all devices, including desktops, laptops, tablets, and smartphones. It's as simple as visiting our site and logging in. There are no plugins or apps to install - simply use your favorite web browser.

     

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  • Mailpile

    Free Linux Web Self-Hosted OpenPGP Website

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.

    Mailpile places great emphasis on providing a clean, elegant user interface and pleasant user experience. In particular, Mailpile aims to make it easy and convenient to receive and send PGP encrypted or signed e-mail.

    Mailpile's primary user interface is web-based, but it also has a basic command-line interface and an API for developers. Using web technology for the interface allows Mailpile to function both as a local desktop application (accessed by visiting localhost in the browser) or a remote web-mail on a personal server or VPS.

    The core of Mailpile is a fast search engine, custom written to deal with large volumes of e-mail on consumer hardware. The search engine allows e-mail to be organized using tags (similar to Gmail's labels) and the application can be configured to automatically tag incoming mail either based on static rules or bayesian classifiers.

     

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  • Keybase

    Free Mac Windows Linux Web Android ... iPhone Ruby JavaScript Go (Programming Language) Java Website

    Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography.

    Keybase is for anyone. Imagine a Slack for the whole world, except end-to-end encrypted across all your devices. Or a Team Dropbox where the server can't leak your files or be hacked.

    Keybase is a messaging platform where:

    • you can write securely to any twitter, reddit, facebook, github, and hacker news user
    • you don't need to know someone's phone number or email address
    • all messages are secure, end-to-end encrypted
    • multi-device: your messages survive and transfer with encryption to new phones & computers
    • free for everyone, and free of ads
    • open source
    • multi-platform, w/apps for macOS, Linux, and Windows

     

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  • Mailfence

    Freemium Web Android iPhone Android Tablet iPad Website

    Mailfence is a free secure and private mail service, that provides an end-to-end encrypted email.

     

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  • Signal

    Free Mac Windows Linux Android iPhone ... Android Tablet iPad Chrome Ubuntu Touch Website

    TextSecure and RedPhone have been merged to create Signal!

    Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.

    • Say Anything - Send high-quality group, text, picture, and video messages, all without SMS and MMS fees.
    • Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.
    • Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.
    • Stay Secure - We cannot hear your conversations or see your messages, and no one else can either. No exceptions. You can even tap and hold on a contact's name to see advanced identity verification options. Everything in Signal is always end-to-end encrypted and painstakingly engineered in order to keep your communication safe.
    • Go Fast - Signal is optimized for speed without compromise. Our state-of-the-art Axolotl protocol is unmatched in its performance, strength, and reliability.
    • Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
    • Get Organized - Unique archive functionality makes it easy to keep track of the conversations that matter to you right now.
    • Pay Nothing - Signal is supported by a team of dedicated developers, community donations, and grants. There are no advertisements, and it doesn't cost anything to use.
    • View Source - All of our code is free, open, and available on GitHub (https://github.com/signalapp ).
    • Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.

     

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  • Jitsi

    Free Mac Windows Linux Web Android ... iPhone Android Tablet BSD iPad Website

    Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.
    It can handle every firewall, and has many other useful features.

    Jitsi is completely open source / free software, and is freely available under the terms of the GNU Lesser General Public License. It can run on your own server.

     

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  • Mattermost

    Freemium Mac Windows Linux Android iPhone ... Android Tablet iPad Self-Hosted JavaScript Go (Programming Language) Cloudron Website

    Mattermost is an open source, self-hosted Small Slack iconSlack alternative.

    As an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. It’s written in Golang and React and runs as a production-ready Linux binary under an MIT license with either MySQL or Postgres.

    Mattermost is:

    Slack-compatible, not Slack-limited – Mattermost features rival Slack features, and support a superset of Slack’s incoming and outgoing webhook integrations, including compatibility with existing Slack integrations. From your existing Slack teams, you can import users, public channel history and even theme setting colors into Mattermost.

    Mobile and desktop apps, in addition to web – Use Mattermost from your iOS or Android phones and tablets or with installed apps on Windows, Linux and Mac.

    Easy to deploy, manage, and upgrade – Mattermost runs as Linux binary, Docker image, and many other forms. Try Mattermost with a one-line Docker install, and many install guides are available. Improvements ship monthly.

    Supported by a vibrant community – Use Mattermost with dozens of community integrations and applications, including Jira, IRC, XMPP, Hubot, Giphy, Jenkins, GitLab, Trac, Redmine, SVN, RSS/Atom and many others. Build and share your own apps using Mattermost APIs and drivers.

     

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  • twinme

    Free Android iPhone Website

    twinme is a next generation secure instant messaging and High-Definition voice/video call service, protecting your privacy and giving you full control over each of your relationships and exchanged contents.

     

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  • Antox

    Free Android Website

    Antox is an Android client for Tox. It aims to bring the full multimedia support Tox offers to your device, although it's still currently in heavy development.

     

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  • Nextcloud Talk

    Free Personal Web Android iPhone iPad Self-Hosted Website

    Screensharing, online meetings & web conferencing without data leaks.
    Running over your own Nextcloud server.

     

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  • Jami

    Free Mac Windows Linux Android iPhone ... Android Tablet iPad Website

    Voice, video and chat communications, secure, decentralized, strong privacy and freedoms.

     

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  • Jitsi Meet

    Free Web Android iPhone Android Tablet iPad ... Self-Hosted Apple Watch Website

    Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free — with no account needed.

    What else can you do with Jitsi Meet?

    • Share your desktop, presentations, and more
    • Invite users to a conference via a simple, custom URL
    • Edit documents together using Etherpad
    • Pick fun meeting URLs for every meeting
    • Trade messages and emojis while you video conference, with integrated chat.

    Jitsi Meet is packed with premium features.
    Yep, it’s free — and it’s technologically advanced, too. In fact, Jitsi Meet:

    • Sounds better, thanks to HD audio with Opus
    • Is anonymous: No need for an account, ever!
    • Keeps conversations private with encryption by default (and advanced security settings)
    • Is developer-friendly: Modify and customize it to your heart’s content. It’s 100% open source.

     

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  • Disroot

    Free Web Website

    Disroot is a platform providing online services based on principles of freedom, privacy, federation and decentralization.

     

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  • qTox

    Free Mac Windows Linux BSD FreeBSD Website

    qTox - The most feature-rich Small Tox iconTox client; P2P instant messaging, audio and video calls.

     

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  • Vivaldi Mail

    Free Web Website

    Free email service with no ads and no strings attached. Also contacts and calendar features.

     

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  • Criptext

    Free Mac Windows Linux Android iPhone Website

    Finally, an email service that's built around your privacy. Get your @criptext.com email address and see what it's like to have peace of mind and privacy in every email you send.

    Features:

    +End-to-end Encryption: Criptext uses the open source Signal Protocol library to encrypt your emails. Your emails are locked with a unique key that‘s generated and stored on your device alone, which means only you and your intended recipient can read the emails you send.

    +No data collection: unlike every other email service out there, Criptext doesn't store your emails in its servers. Instead, your entire inbox is stored exclusively on your device.

    +Open Source: our source code is open for everyone to see that Criptext actually works the way it's advertised. You don't have to trust us, you can verify for yourself: https://github.com/Criptext

    +Easy to use: our app is designed to work as simple as any other email app — so much so, you'll forget how secure it is.

    Get Criptext and see how easy it is to email with more security and privacy!

     

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  • Tok

    Free Android iPhone Android Tablet Website

    Tok is easy-to-use software that adopts peer-to-peer communication, end-to-end encryption technologies. With Tok,you can send messages, photos, videos and files of any type without anyone else listening in.

     

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  • Element

    Free Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Matrix.org Cloudron Website

    A free instant messaging and collaboration software based on the Matrix protocol.

     

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  • chat.onion

    Free Android Website

    Anonymous and fully encrypted peer-to-peer instant messenger for Android using onion routing (via Tor)!
    Many instant messengers already use encryption to secure message contents, but they can't hide important metadata such as your IP address and who you are communicating with!

    To hide all your information, including your metadata, identity, and IP address, Chat.onion uses onion routing (Tor) to send each message over several randomly selected proxy servers. Multiple layers of encryption are used to ensure that each proxy only knows it's immediate successor and predecessor, but not the entire message route.

    Chat.onion users are identified via 16 character checksums of their public keys. To connect with other users, send them an invitation with your ID, show them your QR code, or use your camera to scan theirs.



    Download: https://github.com/OnionApps/Chat.onion/raw/master/app/app-release.apk



     

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  • ZeroChat

    Free Mac Windows Linux Web Self-Hosted ... Python JavaScript ZeroNet Website

    An IRC-like internet chatroom hosted on ZeroNet, a distributed network. 0rc is a fully distributed website, and messages are shared through peers using the ZeroNet stack. In addition, making a new chatroom website is a simple as downloading the files and cloning the site.

     

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  • Zulip

    Free Personal Mac Windows Linux Web Android ... iPhone Android Tablet BSD iPad Self-Hosted Website

    Zulip is a group chat app in which messages are threaded by topic, helping you have long-running, organized conversations. Zulip's threading makes it easy for people not always on chat (like managers, remote team members, contractors, part-time workers, etc) to weigh in on questions and decisions, and for people in different timezones to effectively communicate. It also makes it easy to catch up on the 100s of messages a day that are typical for a busy user; since you can easily skim or ignore the threads that aren't relevant to you.

    Full-history search
    Search is both snappy and smart, helping you look for text, people, and threads of conversation, with advanced search operators for fine-grained control.

    Team presence and buddy list
    See who is online at a glance.

    Inline image, video, and tweet previews
    Send a link and we'll automatically generate an inline preview.

    Fine-grained control over mobile, desktop, and email notifications
    Stay informed in real-time without being overwhelmed.

    Lightweight markup
    Syntax highlighting, bulleted lists, clickable links, inline images, and more.

    Private and public streams
    Enjoy the benefits of threaded conversations while controlling your audience and privacy.

    Hundreds of integrations
    Get alerts and updates from your favorite services with off-the-shelf integrations for Jira, Trac, Nagios, Github, Jenkins, and more.

    One-on-one and group private conversations
    Have private conversations with one or as many people as you need.

    Persistence
    Zulip is always receiving messages for you, even when you're logged out.

    Drag-and-drop file uploads
    Drag a file into the compose box and we'll upload and preview it for you. Sharing and discussing work with teammates has never been easier.

     

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  • Matrix.org

    Free Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Cloudron Java Perl Website

    Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control. Uses include Instant Messaging (IM), Voice over IP (VoIP) signalling, Internet of Things (IoT) communication, and bridging together existing communication silos - providing the basis of a new open real-time communication ecosystem.

     

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  • CTemplar

    Freemium Web Android iPhone Android Tablet iPad ... F-Droid Website

    CTemplar offers users the world’s most secure encrypted email program. CTemplar’s security does not lie solely in its advanced encryption. CTemplar is structured and domiciled so as to best protect your data from information requests.

     

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  • Briar

    Free Android Website

    An open-source decentralized and encrypted messaging app even without internet connection via Wi-Fi and Bluetooth.
    Messages are stored securely on your device, not in the cloud. Connect directly with nearby contacts - no Internet access is required.

     

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  • Pidgin

    Free Mac Windows Linux BSD PortableApps.com ... Xfce Website

    Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols that support it. The program is extendable through plugins, including "Off-the-Record Messaging" and Pidgin encryption, providing end-to-end message encryption.

     

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  • Telegram X

    Free Android iPhone Android Tablet Telegram iPad Website

    An alternative Telegram client based on TDLib, with higher speed, slicker animations and experimental features.
    The goal of Telegram X is to reinvent Telegram and explore new frontiers in speed, ease of use, quality of animations and all other aspects.

     

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  • Silence

    Free Android Website

    Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.

     

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