.CRL file extension

The program works with the following extensions: png, gif, zip, jpg, wmf, bmp, jpeg, cer, prf, tvp, cnf, qds, crl, rat, cdf, crt, shb, uea, der, shs, dib, sst, dun, emf, stl, tif, jpe, udl, url, p7r, ivf, p7s, crd, cat, crds, ueaf, jfif, tiff, theme, msstyles, slupkg-ms and appref-ms

Belarc Advisor is a tool that can analyze your computer.