BOTS, BOTS EVERYWHERE
Disclaimer: This group promotes bots that help or don't negatively impact the deviantART community. There are many bot accounts out there that spam favorites and watches to thousands of people. This group does not endorse such behavior.
General Use Bots Available To The Public
Add your username to their system and you will be sent a greeting every year on your birthday until you decide to opt-out.
A work in progress bot by DRSDavidSoft to help you automate your dA routine. Read about his plans here. See available tools here.
The largest point account on deviantART. Give and receive llama badges, favorites, and watches through