Update (22.10.2015): FIESTA4.0 released!
FIESTA stands for Feynman Integral Evaluation by a Sector decomposiTion Approach.
FIESTA originated in collobaration with M. Tentioukov.
The current version of FIESTA is being developed together with V. Smirnov.
FIESTA is written partially in Wolfram Mathematica and partially in C (starting from version 2.0.0 we got rid of Fortran parts).
FIESTA is distributed under the terms of GNU GPLv2.
FIESTA is based on the sector decomposition approach to the numerical evaluation of Feynman integrals originally applied by G.Heinrich and T.Binoth (there is a public algorithm performing a similar task by C.Bogner and S.Weinzierl).
FIESTA is aimed to be user-friendly: the only input the user has to provide is the set of loop momenta, the set of propagators, the set of substitutions for the parameters and the required integration order. After downloading the binaries or compiling the code there is no need of writing programs or compiling anything to evaluate an integral - simply run the evaluation from Mathematica.
FIESTA can work both as a pure Mathematica code (ONLY version 6.0 or higher) or by performing external evaluations by a C program. In most cases the second option is highly recommended.
FIESTA can use the QLink program as an external storage for data; it is advised to do use the QLink.
FIESTA can perfectly work in parallel mode; no extra coding is required, just launch it at a multi-processor computer (or a computer with multi-core processors) and set the option to use those.
FIESTA 1 was presented in arXiv:0807.4129.
FIESTA 2 was described in arXiv:0912.0158.
FIESTA 3 was described in arXiv:1312.3186.
All papers about FIESTA were published in Computer Physics Commutications.