fuzzylite is a cross-platform fuzzy logic control library. It provides a natural and simple way of creating a fuzzy logic engine in a few steps using object-oriented programming. It allows you to easily add your own features to the library by just using inheritance. It only relies on the Standard Template Library (STL) which comes with C++. No third-party libraries (e.g., boost) are involved. As a library, it only contains the functions you need from a fuzzy logic controller. qtfuzzylite is a Graphic User Interface which uses fuzzylite to provide a nice and easy way to visually create your fuzzy logic controllers. It allows you to design your fuzzy logic controller and interactively play with it while observing its operation in realtime, and it allows you to export your controller to actual fuzzylite C++ code, so you only need to copy and paste it into your C++ application.
uma::bson is a DOM-style C++ API for reading/writing BSON data. Unlike the MongoDB C++ API, which exposes a read-only interface with a separate interface for creating a BSON representation, this API allows reading/writing on the existing data. The API is designed primarily for serialising/deserialising BSON data to/from streams (files, socket connections, etc.).
OpenSAML is a portable implementation of the Security Assertion Markup Language (SAML) standard for the formation and exchange of authentication, attribute, and authorization data using XML, as defined by OASIS. There are interfaces for a range of languages, including C++ and Java.