Game-streaming site Twitch announced today that it will acquire Curse, which creates programs like voice clients, databases, and mod managers for PC games. Twitch did not note how much the deal is for.

Twitch has more than 100 million users a month, and it has helped to popularize new trends gaming like esports and the rise of influencers and personalities who create fanbases that watch them (and donate money to them) while they play. Curse has over 30 million users a month across its website, social media channels, and desktop applications. The company hosts popular website for hit PC games like Hearthpwn for Hearthstone: Heroes of Warcraft and MMO Champion for World of Warcraft.

Outside of its site, Twitch hasn’t made many services for gamers. It could use this acquisition to extend a reach into that field.

“We’ve long been fans of Curse, which is an innovator in the games industry with a strong culture built around its offerings –from Curse Voice and Curse Client to Gamepedia,” said Emmett Shear, the chief executive officer of Twitch, in a press release sent to GamesBeat. “While it’s still early days for Twitch and Curse, we’re kindred spirits in many ways and are looking forward to working together to enhance our users’ gaming experience.”

“We here at Curse have been avid gamers and Twitch users for quite a long time, so we’re thrilled to be joining the Twitch family,” said Hubert Thieblot, the chief executive officer of Curse, in the press release. “I’m really excited to see how we can bring Curse services into the Twitch network, and provide an unparalleled experience to both Curse and Twitch users. This is going to be terrific for the millions of players who use Curse, and for the larger gaming community.”