https://www.biblegateway.com/: I really like the https://www.biblegateway.com/passage/?search=deut%206&version=nasb;niv;nlt options here. You can pull up several different translations. It is an older website but I like the reading experience more than some others because it keeps a natural text flow.
Study Tool: Bible Hub
September 13, 2023 • Andrea Brown
https://biblehub.com/: I use their https://biblehub.com/interlinear/deuteronomy/6-5.htm for exploring specific words and their https://biblehub.com/p/nas/nlt/deuteronomy/6.shtml for translations separates each section out by verse for easy comparison.
