2 Open Source alternatives to Voiceflow in 2026
We compare 2 self-hostable tools you can deploy on your own server in minutes, with license, tech stack and a ready-to-copy docker-compose.
Quick comparison
Sorted by featured first, then GitHub stars as a tiebreaker — the same rule we use across the whole site.
Detailed profile of each alternative
Alternative to Voiceflow
Visual AI agent builder, an alternative to Voiceflow.
Alternative to Voiceflow
Visual editor on LangChain for AI flows, an alternative to Voiceflow.
How much does Voiceflow cost, and how much can you save?
Voiceflow charges a recurring monthly fee. Self-hosting the alternative, you only pay for the server — usually a few dollars a month.
Calculate your exact savings in the SaaS Audit →Already know which one you want?
Add LangFlow to the Stack Builder and generate a ready-to-deploy docker-compose.yml, alone or alongside the rest of your stack.
Build my stackFrequently asked questions
Do I need Docker to self-host a Voiceflow alternative?
Yes, for all 2: each one has a ready-to-copy docker-compose.yml. You just need Docker installed on your server.
How much RAM do I need at minimum?
The lightest option on this list is LangFlow, which runs on as little as 256MB of RAM — enough for a cheap VPS.
Are they all 100% free, or are there paid features like on Voiceflow?
0 out of 2 are 100% FOSS. The rest are Open-Core: the core is free and self-hostable, but some advanced feature may stay paid — we call it out on each tool's page.