ATSW is useful. I just came across this too that I will be installing. It gives additional text in the tooltips for ink, pigment, and herbs that tie them all together so you can see what pigment is made from what herbs, what ink is made from what pigment, etc. It at least addresses one of my gripes about how inscription works.
XIL: Xedd's Inscription List : WoWInterface Downloads : TradeSkill Mods
I am, however, still trying to find something that will let me filter minor glyphs and possibly what major glyphs have been discovered. I don't imagine it would be too terribly hard since you can get a list of all trainable major glyphs - anything beyond that would be learned. Unfortunately I don't know LUA and I have little spare time to learn it.