Lurupa–rigorous error bounds in linear programming. The software part of my dissertation, Lurupa is a tool to rigorously bound the optimal value of a linear program and compute verified enclosures of near optimal feasible points. It is written in pure ANSI C++ and uses the interval library PROFIL/BIAS. In addition a linear programming solver is needed to compute approximate solutions. Currently only lp_solve is supported but modules to link to other solvers are planned and can be easily implemented.