http://www.sierra.com/en/home/games.html
Excellent. But what's not so excellent is the LSL collection, whose lack of LSL7 disturbs me (yet they have a screenshot of it, which is rather odd). LSL7 is easily the best LSL sequel, almost as good as the original, and possibly funnier. The humor in 2 through 6 seemed to consist entirely of cruel pranks being played on Larry (LSL6 seemed particularly mean-spirited), which I just find to be poor taste and not funny. And I'd say what I think of LSL:MCL, but the voices in my head tell me not to.
Fortunately, the rest of them are more or less complete. KQComp is missing Mask of Eternity, which I thought was a decent game but a lousy KQ, so it isn't really an essential KQ. SQComp has everything. PQComp has all four of the good adventure games; it's missing the SWAT games, the first one of which was utter crap and totally unplayable, not to mention spans 4 CDs, and the others aren't remotely adventure games.