GridTest is a framework for testing automated theorem provers using randomly generated formulas. It can be used to run tests locally, in a single computer, or in a computer grid. It automatically generates a report as a PostScript file which, among others, includes graphs for time comparison. We have found GridTest extremely useful for testing and comparing the performance of different automated theorem provers (for hybrid, modal, first order and description logics). We present GridTest in this framework description in the hope that it might be useful for the general community working in automated deduction.