LOOL (Leading Order One Loop) is a Mathematica package for analytical and numerical evaluation of basic one loop integrals, as well as composite functions composed out of these basic integrals.
Composite functions obtained with this package are numerically stable and pre-evaluated for all possible limits. Once defined, any further numerical evaluation takes place in literary zero time.
User manual is available on http://arxiv.org/abs/1407.2727. If you use LOOL in a scientific publication or talk, please give proper academic credit to us by citing our paper.