Alternatives / Voiceflow
Looking for an open source Voiceflow alternative? We compared 8 open source AI agent, chatbot, and voice agent platforms by license, self-hosting, visual builders, and channels. They range from visual agent builders to voice frameworks, and two of them use source-available licenses.
Written by Maxime DERAME
Last updated:
| Alternative | Best for | License |
|---|---|---|
| Langflow | Visual builder for AI agents and RAG | MIT |
| Parlant | Controlled conversational agents with guidelines | Apache-2.0 |
| Botpress | Chatbot platform with a visual builder (mostly cloud) | MIT public components / hosted platform |
| Typebot | Interactive chatbots (source available) | Functional Source License |
| LiveKit | Real-time voice and video agents | Apache-2.0 |
| Dograh | Self-hostable voice agents | BSD-2-Clause |
| Hexabot | Multichannel agents (source available) | Fair Core License (FCL-1.0-ALv2, source available) |
| Tiledesk | No-code support agents across channels | MIT + enterprise images |
We looked for open-source tools that overlap with Voiceflow's core: designing conversational agents visually or in code and deploying them across web, messaging, and voice channels. We verified each project's license, recent activity, stars, and self-hosting in its repository. Voiceflow is a hosted collaborative platform, so we separate visual builders from developer frameworks and flag source-available licenses. See our methodology for the full criteria.
Langflow, Botpress, and Typebot are visual builders. Parlant is a framework that controls agent behavior with guidelines rather than flow diagrams. LiveKit and Dograh focus on real-time voice agents, and Hexabot and Tiledesk target multichannel and support agents. Pick by whether you need a visual designer, voice, or messaging channels.
Typebot uses the Functional Source License, and Hexabot uses the Fair Core License with an Apache 2.0 future license, so both are source available rather than standard open source. Botpress publishes MIT components such as its integrations and developer tools, but the platform itself is mainly a hosted cloud product.
Langflow is the closest for visual agent building, with a drag-and-drop interface backed by Python, and it is MIT-licensed. Botpress and Typebot are the closest for chatbot flows, and Tiledesk covers no-code support agents with an enterprise edition for advanced features. LiveKit adds telephony and real-time media for voice.
Langflow and Botpress's published components are MIT. Parlant and LiveKit are Apache-2.0, Dograh is BSD-2-Clause, and Tiledesk is MIT with enterprise credentials needed for its enterprise images. Typebot and Hexabot are source available.
Langflow, LiveKit, Botpress, Dograh, Typebot, and Tiledesk had commits within days of this update. Parlant's last commit was in July 2026, and Hexabot is a small project with about 1,150 stars.
Voiceflow is a proprietary hosted platform priced per seat and usage, with agents, knowledge, and conversation data stored on its servers. Open-source alternatives let you self-host the builder and runtime, choose your own models, keep conversations private, and avoid per-seat pricing, at the cost of running the stack and, for some, less polished collaboration.
Langflow is an MIT-licensed visual, drag-and-drop platform for building AI agents and retrieval-augmented generation apps, backed by Python, with support for many models and vector stores, and deployment as an API or MCP server. It can be self-hosted, and DataStax offers a hosted version. Advanced use may need some Python.
Pricing: Free to self-host; hosted options are paid.
LiveKit is an Apache-2.0 open-source real-time media server and agents framework for building voice and video AI agents, with telephony, observability, and SDKs. The self-hosted framework is free, and LiveKit Cloud includes a free allowance of agent minutes per month. It targets real-time media, which is more than most chatbots need.
Pricing: Free to self-host; LiveKit Cloud has a free tier and paid plans.
Parlant is an Apache-2.0, self-hostable conversational AI server that manages agent behavior through context-aware guidelines and journeys, so agents follow your rules more predictably. It is built around guidelines rather than a visual flow builder, and is aimed at developers building customer-facing agents.
Pricing: Free and open source; model costs apply.
Botpress provides visual agent development, integrations, SDKs, plugins, tools, actions, and multi-channel conversational workflows. The current MIT public repository primarily contains SDK and integration tooling rather than the complete hosted platform.
Pricing: Hosted platform and services may be paid; complete current platform is not fully self-hostable.
Typebot is a visual chatbot builder for questions, conditions, variables, forms, webhooks, API integrations, embeds, payments, and custom logic. Current versions use a Functional Source License and are described as Fair Source.
Pricing: Self-hostable source available software; current license is not OSI-approved.
Dograh is a BSD-2-Clause voice agent platform where you choose your own speech-to-text, LLM, and text-to-speech models, with a visual workflow builder. It can be self-hosted, used as a managed cloud, or deployed in your own VPC.
Pricing: Free to self-host; the managed cloud is paid.
Hexabot combines visual workflows, actions, AI agents, persistent memory, RAG, MCP tools, custom tools, channels, PostgreSQL, and extensibility. Current v3 releases use the Fair Core License with Apache-2.0 as a future license.
Pricing: Source available under FCL; verify current commercial and future Apache-2.0 terms.
Tiledesk is an MIT-licensed platform for building LLM-enabled support chatbots that hand off to human agents, across web, messaging, email, and voice channels, with Docker Compose and Helm deployment. Tiledesk Enterprise customers can request credentials to pull private enterprise-only images.
Pricing: Free to self-host the open-source edition; enterprise features and cloud plans are paid.
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| Langflow | Visual agent builder | MIT | Yes | Agents and RAG |
| Parlant | Agent framework | Apache-2.0 | Yes | Guideline-driven agents |
| Botpress | Chatbot platform | MIT components + cloud | Partly | Visual chatbots |
| Typebot | Chatbot builder | Functional Source License | Yes | Interactive bots |
| LiveKit | Voice and video framework | Apache-2.0 | Yes | Real-time voice agents |
| Dograh | Voice agent platform | BSD-2-Clause | Yes | Voice agents |
| Hexabot | Agent platform | FCL-1.0-ALv2 | Yes | Multichannel agents |
| Tiledesk | Support agent platform | MIT + enterprise | Yes | No-code support agents |
Want to build agents visually
Langflow offers a drag-and-drop builder for AI agents and RAG apps, backed by Python, under MIT.
Need predictable agent behavior
Parlant guides agents with context-aware guidelines and journeys instead of a flow diagram, under Apache-2.0.
Want to build voice agents on your own stack
Dograh is a BSD-2-Clause voice agent platform where you choose your own speech-to-text, LLM, and text-to-speech models.
Need real-time voice and telephony
LiveKit is an Apache-2.0 framework for voice and video agents with telephony and observability.
Want a chatbot flow builder
Typebot is a visual editor for interactive chatbots, but its Functional Source License is not standard open source.
Want no-code support agents across channels
Tiledesk builds support agents for web, messaging, email, and voice, with enterprise features behind private images.