Frosty is an open-source Twitch client built from the ground up. Some features include:

• Browse followed streams top streams and top categories
• Search for channels and categories
• Watch live streams with chat
• Support for BTTV FFZ and 7TV emotes/badges
• Emote menu and autocomplete
• Local chat user message history
• Chatters list with filter
• Theater and full-screen mode
• Sleep timer
• Block and unblock users
• Light dark and black (OLED) themes
• Customizable settings

For more information see the full source on GitHub: https://github.com/tommyxchow/frosty