Ensuring that no one outside of who you’re having a conversation with is a hallmark of true privacy. These apps ensure that all data is protected from your end to the recipients, and not able to be read by anyone else.
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.
A safe home for all your data – Access & share your files, calendars, contacts, mail & more from any device, on your terms.
TextSecure and RedPhone have been merged to create Signal!
Secure email with absolutely no compromises, brought to you by MIT and CERN scientists. Swiss Based
A free instant messaging and collaboration software based on the Matrix protocol.
Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.
Google Docs is an online word processor, part of...
With WhatsApp, you'll get fast, simple, secure messaging and calling, available on phones all over the world.
An open source note taking and to-do application with synchronisation capabilities.
Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure...
Standard Notes is a simple and private notes app. It allows you to write and sync your notes across all your devices, including your iPhone, iPad, Mac, and web browser.
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.
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!
Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access.