TooN is a very efficient numerics library for C++. The main focus of the library is efficient and safe handling of large numbers of small vector matrices and providing as much compile time checking as is possible. The library also works with large vectors and matrices and integrates easily with existing code. In addition to elementary vector and matrix operations, the library also providers linear solvers, matrix decompositions, optimization, and wrappers around LAPACK.
The Aura.Input package contains tools to describe and filter user inputs from an HTML form, including sub-forms/sub-fieldsets, fieldset collections, an interface for injecting custom filter systems, and CSRF protection. Note that this package does not include output functionality, although the “hints” provided by the Form object can be used with any presentation system to generate an HTML form.