https://store.omnigroup.com/lost/

(Do check the trial version first, though, to make sure that it's actually going to improve your workflows – I'm finding that I can't use it yet – too much of my work depends on scripts which it either breaks or runs very slowly. It also allocates a puzzlingly large and inflexible proportion of the screen to the inspectors, and leaves a number of old V5 bugs unattended to).