If you're looking for a general-purpose chatbot that can answer questions and draft text messages, Botpress is a top contender. It's an end-to-end AI agent stack that uses OpenAI's Large Language Models (LLMs) and Generative Pre-trained Transformers (GPT). Botpress has more than 100 integrations, including WhatsApp and Telegram, so it can reach a lot of different platforms and devices. It also has features like professional greetings, database synchronization and a free tier for small-scale use.
Another option is LetsAsk.AI, a no-code conversational chatbot platform that uses AI technology to rapidly answer questions based on text, files or websites you upload. It's highly customizable and supports 95 languages, so it's good for businesses, freelancers and creators. The platform has good security and can integrate with Discord and Zapier, among other services, and has a variety of pricing tiers depending on your needs.
Last, Chatbase is a full-featured platform for building chatbots and integrating them with websites or using them through an API. It supports multiple languages and multiple data sources for training, along with detailed analytics and good security. That makes it a good choice for businesses that want to use AI chatbots to improve customer support and lead generation.