Signal sends high-quality group, text, voice, video, document, and picture messages anywhere in the world. Signal messages and calls are always end-to-end encrypted and painstakingly engineered to keep your communication safe. 

Signal - Secure Messaging

Diaspora is distributed and contextual social networking. It is decentralized and provides freedom and privacy. Instead of everyone’s data being held on huge central servers owned by a large organization, diaspora* exists on independently run servers (“pods”) all over the world. You choose which pod to register with, and you can then connect seamlessly with the diaspora* community worldwide.
 
In diaspora* you own your data. You don’t sign over rights to a corporation or other interest who could use it. In addition, you choose who sees what you share, using Aspects. diaspora* pioneered the concept of aspects, which means you can organise your contacts according to their role in your life. This means you can share something just with family members or work colleagues, knowing that no one you don’t want to will be able to see what you post.

Diaspora is distributed and contextual social networking. It is decentralized and provides freedom and privacy. Instead of everyone’s data being held on huge central servers owned by a large organization, diaspora* exists on independently run servers (“pods”) all over the world. You choose which pod to register with, and you can then connect seamlessly with the diaspora* community worldwide.

Diaspora - Distributed and contextual social networking

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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Signal - Secure Messaging

Diaspora - Distributed and contextual social networking

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

Cryptag - Encrypted, taggable, searchable cloud storage

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Projects

Signal - Secure Messaging

Diaspora - Distributed and contextual social networking

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

Cryptag - Encrypted, taggable, searchable cloud storage

TechStack

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