GluCat: Generic library of universal Clifford algebra templates GluCat is a library of template classes which model the universal Clifford algebras over the field of real numbers, with arbitrary dimension and arbitrary signature. GluCat implements a model of each Clifford algebra corresponding to each non-degenerate quadratic form up to a maximum number of dimensions. GluCat classes were originally designed to be used as template parameters for other template libraries, such as Blitz++, deal.II, Matrix Template Library and POOMA. These template libraries expect a numeric class which implements ”appropriate numeric semantics”. To provide these semantics, the GluCat interface matches float or complex<> as much as possible, but the GluCat classes must be different from float or complex<>, because they model a different algebra.