The 100ms Prebuilt UI is now open source and available on GitHub under the MIT License. This includes roomkit-react and roomkit-web, which contain the Prebuilt component and the web component port of the HMSPrebuilt component. Additionally, code for Prebuilt is available on other platforms with documentation and examples to guide developers through integration. The open-source Web SDKs allow for more customization and fine-tuning of features like chat, hand-raising, and video layouts. Contributions are welcome, and a contribution guide is provided for those interested in getting involved.