Kittmaster's Component Database exists to give Multisim and Ultiboard users a place to fill in the gaps — uploading parts that aren't in the official database, or correcting ones that are wrong. It's completely free and entirely ad-free, with very few restrictions on how you use it.
A site like this only stays useful if people put something back into it. Contributions — components, footprints, tutorials, whatever you've got — are what keep the database accurate and growing. That said, contributing is never mandatory. You're welcome to use everything here regardless. But if everyone chips in a little, it makes the whole thing better for all of us — helping us help you.
Thank you for using Kittmaster's Component Database.