The Maximum Entropy Toolkit provides a set of tools and library for constructing maximum entropy (maxent) models in either Python or C++. It features conditional maximum entropy models, L-BFGS and GIS parameter estimation, Gaussian Prior smoothing, a C++ API, a Python extension module, a command line utility, and good documentation.
libhid is a user-space HID access library. It provides a generic and flexible way to access and interact with USB HID devices, much like libusb does for plain USB devices. It is based on libusb, thus it requires no HID support in the kernel. Furthermore, it aims to support all operating system supported by libusb: Linux, BSD, OS X, and Windows. Python bindings are provided, and other high-level bindings are available upon request.
Inspired by dd5sum, ddsum includes the following features: support for md5, sha1, sha224, sha256, sha384 and sha512 (plus any additional digests provided by OpenSSL); the ability to read source data and write it out while computing a message digest; the ability to compute multiple message digests with one pass of the source data; and the ability to verify that a message digest matches the data you have.