YAZ is a C/C++ library for information retrieval applications using the Z39.50/SRW protocols for information retrieval. Properties of YAZ: * Complete Z39.50 version 3 support. Amendments and Z39.50-2002 revision is supported. * Supports SRW version 1.0 (over HTTP and HTTPS). * Includes BER encoders/decoders for the ISO ILL protocol. * Supports the following transports: BER over TCP/IP (RFC1729), BER over unix local socket, and HTTP 1.1. * Secure Socket Layer support using OpenSSL. If enabled, YAZ uses HTTPS transport (for SOAP) or "Secure BER" (for Z39.50). * Offers ZOOM C API implementing both Z39.50 and SRW. * The YAZ library offers a set of useful utilities related to the protocols, such as MARC (ISO2709) parser, CCL (ISO8777) parser, CQL parser, memory management routines, character set conversion. * Portable code. YAZ compiles out-of-the box on most Unixes and on Windows using Microsoft Visual C++. * Fast operation. The C based BER encoders/decoders as well as the server component of YAZ is very fast. * Liberal license that allows for commercial use of YAZ.