Alternatives to

1. Amazon Lex: Amazon Lex is an artificial intelligence-powered conversational interface that powers chatbots for customer service, recommendations and more. Pros: Easy to use; Low cost; Amazon supports a large selection of languages; Supports integration with existing systems. Cons: Not as feature-rich as some other tools; Limited scalability.

2. Watson Assistant: Watson Assistant is an AI-powered customer service platform from IBM. Pros: Feature-rich; Capable of handling complex conversations; Works with several languages; Includes a comprehensive dashboard for monitoring activity. Cons: Complex to set up; High levels of customization can be expensive.

3. Dialogflow: Dialogflow is a Google-owned conversational AI platform. Pros: Powerful and scalability; Integration with Google Assistant; Possibility of Manual conversation integration; Secure and robust platform. Cons: Complex setup process; AI can learn to rely on easily configured rules instead of making decisions; Limited language support.