Use GPG Suite to encrypt, decrypt, sign and verify files or messages. Manage your GPG Keychain with a few simple clicks and experience the full power of GPG easier than ever before.
 
GPG Suite consists of: 
GPGMail is an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple clicks. 

GPG Keychain is an open source application for macOS. It allows you to manage your OpenPGP keys. Create and modify your keys and import the keys of your friends from a key server. 

GPG Services is a plugin that brings GPG power to almost any application. It allows you to encrypt/decrypt, sign/verify and import keys from text selections, files, folders and much more. 

MacGPG is the underlying power engine of GPG Suite. If you're familiar with the command line use the raw power of it. Based on GnuPG.

Use GPG Suite to encrypt, decrypt, sign and verify files or messages. Manage your GPG Keychain with a few simple clicks and experience the full power of GPG easier than ever before.

GPG Suite - Everything you need to get started with
secure communication and encrypting files
in one simple package

Password4j is a Java user-friendly cryptographic library for hashing and checking passwords with different Key derivation functions (KDFs) and Cryptographic hash functions (CHFs). The library fully supports Argon2, BCrypt, SCrypt and PBKDF2 and can produce and handle cryptographic salt and pepper.

Password4j - Cryptographic library that supports Argon2, Bcrypt, Scrypt, PBKDF2 and various cryptographic hash functions. 

Curve implements the CurveZMQ elliptic curve security mechanism, for use in ZeroMQ applications. This library is primarily a reference implementation for the CurveZMQ specification but may also be used for end-to-end security. CurveZMQ creates encrypted sessions ("connections") between two peers using short term keys that it securely exchanges using long term keys. When the session is over, both sides discard their short term keys, rendering the encrypted data unreadable, even if the long term keys are captured. It is not designed for long term encryption of data.

Libcurve - An encryption and authentication library for ZeroMQ applications

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

Intel QuickAssist Technology(QAT) OpenSSL Engine. Its features include Synchronous and Asynchronous Operation, Asymmetric PKE Offload, HMAC Key Derivation Function (HKDF) Offload, Pseudo Random Function (PRF) offload and lot more.

QAT_Engine - Intel® QuickAssist Technology(QAT) OpenSSL Engine

TinySSH is small SSH server using state-of-the-art cryptographic library NaCl / TweetNaCl. TinySSH offers good security on TCP and is designed for perfect security on CurveCP.

TinySSH - small SSH server

Java implementation of Shamir's Secret Sharing algorithm as described in Applied Cryptography [as LaGrange Interpolating Polynomial Scheme].

Shamir Secret Sharing in Java

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs. BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.
 
Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs. Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. Google don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs. BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Boringssl - Fork of OpenSSL that is designed to meet Google's needs

Bee2evp is a cryptographic library which encapsulates Bee2 into OpenSSL. Bee2evp provides cryptographic services using the EVP interface. Bee2evp is organized as an OpenSSL engine.

Bee2evp - An OpenSSL engine

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GPG Suite - Everything you need to get started with secure communication and encrypting files in one simple package