A new Chat Resource Center has been launched, offering overviews, tutorials, and design patterns for building and deploying mobile and web chat applications. It highlights the ease of creating chat apps today, thanks to technologies supporting low-latency messaging and user authentication. For Android developers, the Twitter Fabric platform is recommended for scalable app development, while PubNub provides essential messaging, presence monitoring, and chat history features. Digits is suggested for user authentication, enhancing security and engagement by using mobile phone numbers instead of email validation. The guide includes two parts: one focusing on getting started with Fabric and PubNub for real-time messaging and user presence, and the other on setting up Digits for user authentication. Additionally, the PubNub BLOCKS catalog offers advanced features like chat translation and spam filtering, allowing developers to incorporate complex application logic into their chat apps.