Dialogflow (Google Cloud) is a powerful NLU‑driven chatbot builder for voice and text interfaces. Below is a curated list of 20 alternative platforms that let you design, train, and deploy conversational agents across web, mobile, and messaging channels.
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Comprehensive SDK and service suite for building, testing, and publishing bots on Azure, with rich channel integration and enterprise‑grade security.
AI‑powered assistant that combines intent detection, dialog management, and easy integration with IBM Cloud services.
Fully managed service for building conversational interfaces using the same deep learning technologies as Alexa.
Developer‑centric, on‑premise framework for building contextual AI assistants with customizable NLU and dialogue policies.
Open‑source visual bot builder with a modular architecture, supporting NLU, flow editor, and multi‑channel deployment.
Enterprise conversational AI platform offering a low‑code bot builder, analytics, and integration with legacy systems.
Free, community‑driven NLU platform (owned by Meta) that turns text and voice into structured data for bot logic.
No‑code chatbot creator focused on Facebook Messenger, Instagram, and SMS, with marketing automation features.
Drag‑and‑drop bot builder for Messenger and Instagram, geared toward marketers and e‑commerce teams.
Visual conversational builder for web, WhatsApp, and Messenger, emphasizing UI‑first design and lead‑generation flows.
Multi‑channel bot platform with visual flow editor, integrations, and built‑in analytics for small‑to‑mid businesses.
Hosted AIML engine for creating rule‑based bots, with support for custom hosting and API access.
Conversational messaging platform offering bot building, rich media templates, and omnichannel deployment (WhatsApp, SMS, web).
Free bot building platform with AI NLU, drag‑and‑drop flow designer, and integration to over 30 channels.
AI‑driven chatbot creator for sales, support, and lead capture, with voice bot capabilities and analytics.
Enterprise AI chatbot for customer support, featuring a no‑code builder, multilingual NLU, and deep CRM integrations.
Conversational AI platform that delivers real‑time support bots across web, mobile, and messaging apps.
Developer‑first bot platform with a serverless runtime, built‑in NLU, and orchestration of complex workflows.
Visual chatbot builder for e‑commerce and support, offering live‑chat handover, analytics, and multi‑channel publishing.
Landing‑page focused chatbot platform that creates conversational forms to boost conversion rates.