Editors' Review for zTwitch - Twitch App
zTwitch is one of the most well-made third party clients for Twitch.tv works on Windows 10, it has all features it should have, watch live videos and past broadcasts, follow channels and games, live chat and chat replay, support live tiles, etc.
zTwitch has a user-friendly interface, very easy to use, fast and clean, but sometimes pops up ads. It is free but with in-app purchases. It is one of the best Twitch clients for Windows 10, works very well.