Erli was a platform that facilitated user testing and feedback for software products and websites. It allowed developers and designers to receive valuable insights from real users to improve their products before launching them to the public. Users could sign up to participate in testing sessions and provide feedback on various aspects such as usability, design, and functionality. Erli.com acted as a bridge between developers and testers, providing a streamlined process for gathering feedback and iterating on products. Through this platform, developers could identify potential issues early in the development process, leading to more polished and user-friendly final products. However, please note that as of my last update in January 2022, there may have been changes or developments related to Erli.com that I'm not aware of.