The Big Faceless Java PDF Viewer is a Swing component that can display PDF documents. It is intended for developers who don't require the full API. The PDF Viewer can be installed as an applet, an application, via Java Web Start, or embedded in a Swing application. Printing, saving, text search, forms, digital signatures, and annotations are some of the many features available. The viewer can be tailored to include just the features you need, and is a cost-effective solution for those needing the features of Adobe Acrobat on a Java platform.
AS2Secure is a PHP library that allows you to send and receive AS2 (Applicability Statement 2) messages from partners. The project is split into two parts: a client to send one or more documents to a partner and a server to receive one or more documents from a partner. Its main features are asyncronous and syncronous MDN, partner setup, digital signatures, message encryption, secure transport (using OpenSSL), support for SSL client authentication, and multiple attachments (AS2 1.2).
Lite Security Module is a daemon to handle Secure Boxes (files containing cryptographic keys, X509 certificates and data objects), accessible through a PKCS#11 shared library, and supporting the development of non-certified (i.e. lite) software security modules (SSM) or hardware security modules (HSM).