Twitchess

Twitchess couples livestreaming site Twitch to the chess site Lichess. Twitchess lets you accept chess challenges from your Twitch subscribers. Using a command in your Twitch chat, subscribers can enter their Lichess username. Their username will be colored purple in the challenge list on Lichess. Two buttons are added to the challenge list that let you accept a random challenge from anyone, or a random challenge from a Twitch subscriber.

Screenshots from Chrome Web Store