March Madness is here…and so are the office pools! Lock in your brackets before the first round of each tournament tips off on March 19 (men’s) and March 20 (women’s).

Whether you’re hosting a pool or just in it to win it, these apps let you create and share as many brackets as you’d like. You’ll also find stats to help with your picks, highlight reels, advice from college-basketball experts, and plenty of other tools to help you dunk on the competition.

Pro tip: Before submitting your picks, run them through NCAA March Madness Live’s Matchup Analysis tool and ESPN Tournament Challenge’s Bracket Predictor and Analyzer.