BDlot DVD ISO Master, an all-in-one, clean, ad-free and complete freeware. So far, as the only non-paid choice that competently supports commercial and protected DVDs, this free software must be worthy of your recommendations to your readers.
Regardless any DVD copy protections, BDlot DVD ISO Master can access any DVDs on the fly and create ISO image (perfect for reproducing and archiving DVD content) with lossless quality. Comparing with current free DVD backup solutions, like ImgBurn, which needs a third party (maybe paid) program to access encrypted DVDs, BDlot works independently and in an extremely easy manner.
Besides, as a full fledged ISO burning suite, BDlot DVD ISO Master can also burn movie, game, music and system ISO images onto DVD-/+R (DL), DVD-/+RW, DVD RAM, CD, BD25, BD50 discs, and every produced disc will be stable on DVD players.