Start.gg

start.gg, formerly known as smash.gg, is a website that provides tournament organizing tools for event organizers within the esports community. The website was launched in 2015 and features the ability to host registration, form a bracket, and create rankings amongst other things. While the website initially only supported games within the Super Smash Bros. series, it has since then expanded to a plethora of other games with competitive scenes, eventually leading to its rebranding to "start.gg" on May 16th, 2022 to represent this expansion. As of 2020, it has seemingly become the most widely used software for organizing tournaments, surpassing earlier alternatives such as Challonge.

The website was acquired by Microsoft on December 2nd, 2020 following a continued history of collaboration between the two.