Chatterino is a free, open-source Twitch chat client with multi-channel tabs, third-party emotes, and deep customization. See features, pros, cons, and FAQs.
Researched and fact-checked by Bartu Cavusoglu · Updated July 19, 2026
Chatterino is a standalone desktop application that connects to Twitch's chat infrastructure independently of the twitch.tv website, giving users a dedicated, lightweight window (or set of windows) purely for chat. Users log in with their Twitch account and can then open any number of channels as separate tabs, split panes within a single window, or entirely separate popped-out windows, which is especially useful for moderators or viewers who follow many streams at once. Because it is written with performance as a priority, Chatterino is designed to handle very high message throughput, such as during major esports or gaming events with tens of thousands of concurrent chatters, without the lag or dropped messages that can occur in a browser tab running Twitch's native chat.
Unlike commercial chat tools, Chatterino is developed entirely in the open on GitHub under an open-source license, with its codebase, issue tracker, and roadmap publicly visible. This means updates, bug fixes, and new features are driven by a combination of core maintainers and community pull requests, and the tool has no company behind it selling subscriptions or collecting user data for commercial purposes. This model has helped Chatterino build trust within the Twitch community as a genuinely free tool, and it has enabled rapid support for evolving Twitch platform features and third-party emote services over the years.
Yes. Chatterino is completely free and open source, with no subscriptions, ads, or paid tiers.
Yes. Chatterino natively integrates third-party emote services including BetterTTV (BTTV), FrankerFaceZ (FFZ), and 7TV, alongside standard Twitch emotes.
Chatterino is available for Windows, macOS, Linux, and BSD.
Chatterino is not an official Twitch product, but it is a well-established, open-source third-party client with publicly auditable code on GitHub and a long track record within the Twitch streaming community.
No. Chatterino focuses purely on chat functionality; users typically run it alongside a browser or the Twitch app to watch the actual video stream.
Chatterino offers better performance during high-traffic streams, multi-channel management, custom highlights and filters, and support for third-party emotes, all of which the native Twitch chat lacks.
Chatterino is developed openly on GitHub by a small team of maintainers along with community contributors, rather than by a commercial company.
Yes. Users log in with their existing Twitch account credentials to send messages and access channels, the same as they would through Twitch's own chat.