Keyman is a key manager for storing Freenet SVK keys; it keeps all SVK private keys in a encrypted form. This could even work with any type of public/private key encryption (although it focuses on Freenet) and can hopefuly be extended so it can use any future Freenet public/private key types.
Python OpenSSL Wrappers (POW) is an early release as it is now. The intention was to quickly cover the breadth of the OpenSSL library, then the depth of particular areas. Future releases will focus on bug fixes, and filling missing gaps in the API. The digests and ciphers should be adequate for most purposes as should the SSL wrappers. Although certificates and CRLs can be generated using this library, no extension support has been included in the current release.
pyOpenSSL is a Python wrapper for a subset of OpenSSL's functionality, featuring an advanced error management system, connection objects that wrap socket methods, and flexible context objects. Also included is a rudimentary crypto module that can be used to create and verify certificates (X509 objects).
Perso can handle different types of identity card numbers (e.g. German/Austrian ID-card and passport). It can check the numbers for correctness using the "7-3-1"-checksum algorithm. Also it can extract information from the numbers (e.g. birthday) or generate example numbers using custom values.
Nettle is a cryptographic library that is designed to fit easily in more or less any context: in crypto toolkits for object-oriented languages (C++, Python, Pike, etc.), in applications like LSH or GNUPG, or even in kernel space. In most contexts, you need more than the basic cryptographic algorithms; you also need some way to keep track of available algorithms and their properties and variants. You often have some algorithm selection process, often dictated by a protocol you want to implement. And as the requirements of applications differ in subtle and not so subtle ways, an API that fits one application well can be a pain to use in a different context, which is why there are so many different cryptographic libraries around. Nettle tries to avoid this problem by doing one thing, the low-level crypto stuff, and providing a simple but general interface to it. In particular, Nettle doesn't do algorithm selection. It doesn't do memory allocation. It doesn't do any I/O. The idea is that one can build several application- and context-specific interfaces on top of Nettle and share the code, testcases, benchmarks, documentation, etc.
ccrypt is a command line utility for encrypting and decrypting files and streams. It was designed as a replacement for the standard Unix crypt utility, which is notorious for using a very weak encryption algorithm. ccrypt is based on the Rijndael cipher, which is the U.S. government's chosen candidate for the Advanced Encryption Standard (AES). This cipher is believed to provide very strong security. A compatibility mode is included for decrypting legacy "unix crypt" files.
OpenSC provides a set of libraries and utilities to work with smart cards. Its main focus is on cards that support cryptographic operations, and facilitates their use in security applications such as authentication, mail encryption, and digital signatures. OpenSC implements the PKCS#11 API so that applications supporting this API (such as Mozilla Firefox and Thunderbird) can use it. On the card, OpenSC implements the PKCS#15 standard, and aims to be compatible with every software/card that does so.
GNUnet is a peer-to-peer framework with focus on providing security. All peer-to-peer messages in the network are confidential and authenticated. The framework provides a transport abstraction layer and can currently encapsulate the network traffic in UDP, TCP, HTTP, HTTPS, or direct 802.11 (WLAN). GNUnet supports accounting to provide contributing nodes with better service. The services built on top of the framework include anonymous file sharing and a virtual network providing IPv4-IPv6 transition via protocol translation over the P2P network.