9 Best Open Source Voiceflow Alternatives
A curated collection of the 9 best open source and self-hosted alternatives to Voiceflow in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Voiceflow in 2026? The top open-source alternative is Parlant — A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale..
Other highly rated open-source Voiceflow alternatives include Langflow, LiveKit and Botpress.
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.
Low-code AI builder for agentic and RAG applications
Langflow is a visual, low-code platform designed to simplify the creation and deployment of AI agents and Retrieval-Augmented Generation (RAG) applications. Whether you're a developer or a non-technical user, Langflow provides a drag-and-drop interface to build complex AI workflows with reusable components and pre-built flows. - Visual AI Builder: Drag-and-drop interface to design AI agents and RAG workflows without writing boilerplate code. - Multi-LLM & Vector Database Support: Integrates with all major LLMs (e.g., Llama, Mistral, OpenAI) and vector databases (e.g., Pinecone, Weaviate, Qdrant). - Pre-Built Components & Flows: Access a growing library of reusable components and templates to accelerate development. - Python Customization: Extend functionality with Python for full control over AI workflows. - Enterprise-Grade Cloud Deployment: Deploy agents on a secure, scalable cloud platform or self-host for full control. - Collaboration & Sharing: Share flows, collaborate in real-time, and manage projects with teams. - MCP Server Support: Build and deploy Model Context Protocol (MCP) servers for advanced AI integrations. - Open Source & Free Cloud Tier: Available as open-source software with a free cloud tier for quick deployment. Langflow is open-source and can be self-hosted using Docker or deployed via its cloud platform. It supports Python-based customization and integrates seamlessly with existing tools and APIs. The platform is designed for scalability, making it suitable for both small projects and enterprise deployments.
Open source framework for voice, video, and AI agents
LiveKit is an open-source framework and developer platform designed for building, testing, deploying, scaling, and observing AI agents in production. It provides a complete stack for real-time communication and AI integration, enabling developers to create voice, video, and physical AI agents with minimal setup. - Open Source Framework: Build and test AI agents locally or in the cloud. - Real-Time Communication: Supports voice, video, and telephony integrations. - Inference Gateway: Access TTS, LLM, and STT models via a unified interface. - Cloud Platform: Deploy and scale agents globally with LiveKit Cloud. - Observability: Full-stack monitoring for every agent session. - Multi-Model Support: Integrate with leading AI models like OpenAI, Google, and Cartesia. - Telephony Integration: Enable agents to make or receive phone calls via SIP or phone numbers. - Enterprise-Grade Infrastructure: GDPR, SOC 2 Type 2, and HIPAA compliant with 99.99% uptime. LiveKit is open-source and can be self-hosted. The platform supports Kubernetes for scalable deployments and provides detailed documentation for local and cloud-based setups. For production use, LiveKit Cloud offers a managed solution with global infrastructure. Explore the LiveKit Cloud platform
Enterprise-grade AI agent platform for customer support
Botpress is an enterprise-grade AI agent platform designed for customer support, enabling businesses to build, deploy, and scale AI agents without technical limitations or per-seat pricing. The platform automates complex workflows such as refunds, account updates, and multi-step processes, reducing reliance on human agents while maintaining high accuracy. - AI Agent Studio: Visual builder for creating and managing AI agents with no-code/low-code flexibility. - Botpress Engine: Core AI infrastructure that powers agent capabilities and scalability. - Knowledge Bases: Centralized repositories for storing and retrieving contextual information to improve agent responses. - Tables: Structured data management for organizing and querying agent-related data efficiently. - Botpress Desk: AI-powered helpdesk for complex support scenarios, integrating seamlessly with tools like Zendesk and Intercom. - Multi-Channel Deployment: Supports webchat, WhatsApp, Slack, and other platforms for broad accessibility. - Enterprise-Grade Security: SOC 2 compliant with robust data protection measures. - No Per-Seat Costs: Transparent pricing model without additional fees for agent interactions. Botpress is primarily a cloud-based platform with enterprise-grade features. While the core platform is managed by Botpress, it offers extensive API integrations and customization options for developers. Self-hosting is not explicitly supported, but the platform provides APIs and SDKs for deep integration into existing workflows and systems. The open-source components are available on GitHub for community contributions and transparency.
No-code chatbot builder for websites & WhatsApp
Typebot is a no-code platform that enables you to effortlessly create and integrate advanced chatbots into websites and chat platforms like WhatsApp. Build conversational interfaces with customizable blocks, deploy seamlessly across multiple channels, and analyze performance with detailed analytics. - No-Code Builder: Create chatbots using 45+ building blocks including text, images, videos, buttons, date pickers, and payment inputs. - Multi-Channel Deployment: Deploy bots via custom domains, embedded containers, popups, chat bubbles, or WhatsApp. - AI Integrations: Connect with OpenAI, Google Sheets, Zapier, and other tools for enhanced functionality. - Advanced Theming: Customize fonts, colors, shapes, and shadows with reusable templates. - Real-Time Analytics: Track drop-off rates, completion rates, and export data to CSV for deeper analysis. - Cross-Department Use: Automate conversations for marketing, support, product, and sales teams. - Open Source Core: 100% open source with no vendor lock-in and easy-to-use APIs. - Scalable & Reliable: Built for performance with support for multiple generative AI providers. Typebot is open source and can be self-hosted. The platform provides APIs for quick implementation and supports multiple AI providers for generative capabilities. Documentation and community resources are available for deployment and customization.
Hexabot is an open-source platform for creating intelligent, multilingual chatbots without coding complexity.
Hexabot is an open-source platform for creating intelligent, multilingual chatbots without coding complexity.
Free, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
Free, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
Open-source no-code AI chatbot platform
Tiledesk is an open-source, no-code platform designed to build AI-powered chatbots and connect them with live agents. It enables businesses to automate conversations, boost customer support, and deploy AI agents across web, WhatsApp, voice, and more. - No-Code Design Studio: Visually design conversation flows without coding. - Knowledge Base Integration: Connect documents, knowledge bases, or external data sources for accurate AI responses. - Multi-Channel Support: Deploy AI agents on web, WhatsApp, voice, and other channels. - Multi-Agent Systems: Create scalable workflows with multiple AI agents and human-in-the-loop support. - MCP & API Integrations: Connect AI agents to business tools and APIs for enhanced functionality. - Real-World Use Cases: Ideal for customer support, lead qualification, internal support, and semantic search. - 14-Day Free Trial: No credit card required, cancel anytime. Tiledesk is open-source and can be self-hosted. The platform is built for enterprise-grade AI solutions, offering scalability and flexibility for real-world applications.
Privacy-focused modern web browser
Flow Browser is a modern, privacy-focused web browser designed for speed, security, and seamless browsing. With a minimalist interface and powerful features, it enhances productivity while prioritizing user privacy. - Privacy-First: Built-in adblocker and tracker protection for a cleaner browsing experience. - Multiple Profiles: Separate settings and extensions for different user profiles. - Spaces & Pinned Tabs: Organize tabs into spaces and pin frequently used ones for quick access. - Command Palette: Quick access to browser features via keyboard shortcuts. - Offline Games: Built-in games for entertainment without an internet connection. - Chrome Extensions Support: Full compatibility with Chrome Web Store extensions. - Widevine Support: Stream DRM-protected content from services like Netflix. - Sleep Tabs: Reduce resource usage by putting inactive tabs to sleep. - Customizable UI: Personalize app icons and interface to fit your workflow. Flow Browser is a desktop application available for Windows, macOS, and Linux. It does not require self-hosting as it is a client-side application. The source code is open-source and available on GitHub.
About Voiceflow
Voiceflow is the enterprise conversational AI platform designed for customer experience automation. It enables teams to build, deploy, and scale AI agents that handle customer interactions while reducing operational strain.
Key Features of Voiceflow
- Visual Agent Builder: Drag-and-drop interface for designing intelligent workflows without coding
- Multi-Channel Deployment: Deploy AI agents across chat, voice, and other customer touchpoints
- Agentic Context Engine: Powers complex conversations with enriched customer experiences
- Real-Time Analytics: Monitor agent performance and customer interactions with detailed metrics
- Collaborative Workspaces: Team-based environment for designing and iterating AI agents
- Integration Hub: Connects with existing CRM, helpdesk, and business systems
- Low-Code/No-Code: Enables rapid prototyping and deployment of AI solutions
- Scalable Architecture: Supports enterprise-grade deployments with high message throughput
Voiceflow is built for CX teams looking to own every customer interaction while proving measurable return on investment through automation and improved support efficiency.