If you're looking for an open-source interface to connect a chatbot to your website, OpenAssistantGPT is a great option. It's based on OpenAI's assistant technology and supports several models, including GPT-4 and GPT-3.5. It's relatively easy to set up with a small amount of code and supports features like lead capture, file uploads and integration with popular publishing tools. The project is open-source, so you can fork it on GitHub if you need something customized.
Another good option is Chat Nova, a custom AI chatbot development platform that includes full authentication, database integration and role-based access control. It's built with open-source tools like TypeScript and Tailwind CSS and can be easily integrated with Next.js and Vercel SDK. It's self-hosted, so you have full control over your data, and it's got good support for developers and non-technical users.
Owlbot is another good option for a user-friendly interface that lets you create AI chatbots without programming. It supports 95 languages, has advanced analytics and can be embedded in websites, mobile apps or other systems. With pricing tiers including a starter option for small businesses and enterprise options for bigger businesses, Owlbot is flexible and can be used to automate customer interactions at scale.