ProfessionsVault

Shows the mouseover tooltip for the LDB icon / Minimap icon.
Shows the current character's skill in each profession, with clickable links to open or link into chat each trade or a fully-stocked trade.

ProfessionsVault adds the link button to nearly all TradeSkill UIs, whereas the Blizzard UI only displays it for your own professions.

ProfessionsVault enchances the tooltips on recipes to show which of your alts can learn it.

Shows how ProfessionsVault can color recipes in Merchant windows to indicate learnability.

Shows the button added to the TradeSkill UI allowing you to save any linked profession page to your ProfessionsVault.

Shows the coloring of recipes in the Auctioneer browse window, based on which ones your alts can learn.

Shows how ProfessionsVault enhanced the tooltips of crafted items to indicate which characters can craft that item.

Shows the main UI, browsing the professions of one of my alts. Can open or link the profession of any character with a single click.

ProfessionsVault colors recipes in your bags, bank, guildbank and mailbox according to learnability information.

Show the default recipe coloring scheme in auction window and merchant windows.

Broker_CPU showing the tiny memory footprint of a fully-populated ProfessionsVault, in comparison to some other popular addons. Larger memory footprint strongly corresponds to slower load times on login/logout.