SecureDrop is an open-source whistleblower submission system that media organizations can use to securely accept documents from and communicate with anonymous sources. It was originally created by the late Aaron Swartz and is currently managed by Freedom of the Press Foundation. Among the tools used in and around the SecureDrop application are: Tor, GnuPG encryption, Apache, OSSEC, grsecurity, Ubuntu, the Tails operating system, and an air-gap. 

SecureDrop - Whistleblower Submission System

The world's most private and secure chat - open-source, decentralized, and without global identities of any kind. You can use it from the terminal UI, with all contacts and groups in one window. It is a federated chat system with end to end encryption support and low risk of man in the middle attack. 
 
It solves privacy problem by making both messages and contacts accessible only on client devices, reducing the role of the servers to simple message brokers that only require authorization of messages sent to the queues, but do NOT require user authentication.
 
Simplex messaging protocol (SMP) for messaging via secure persistent queues will serve as the low level protocol for SimpleX chat. It uses different encryption keys for each message queue - the key is passed via existing secure channel - e.g. QR code or another simplex queue.

The world's most private and secure chat - open-source, decentralized, and without global identities of any kind. You can use it from the terminal UI, with all contacts and groups in one window. It is a federated chat system with end to end encryption support and low risk of man in the middle attack. 

SimpleX Chat - Decentralized chat with a focus on users’ privacy

CrypTag is an idea, a spec, an API, and a piece of software that makes it easy to build a zero-knowledge system, which means that the server holding user data doesn't know what it is (since it's encrypted).
 
It is meant as a primitive to be used to build more sophisticated systems that would rather not re-implement the pieces necessary to build a zero-knowledge system, but several useful command line applications have been built with it so far, namely cput (for encrypting/saving files), cget (for fetching/decrypting files), and cpass (CryptPass, a password manager).

CrypTag is an idea, a spec, an API, and a piece of software that makes it easy to build a zero-knowledge system, which means that the server holding user data doesn't know what it is (since it's encrypted).

Cryptag - Encrypted, taggable, searchable cloud storage

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SecureDrop - Whistleblower Submission System

SimpleX Chat - Decentralized chat with a focus on users’ privacy

Cryptag - Encrypted, taggable, searchable cloud storage

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Projects

SecureDrop - Whistleblower Submission System

SimpleX Chat - Decentralized chat with a focus on users’ privacy

Cryptag - Encrypted, taggable, searchable cloud storage

TechStack

Tagcloud