ZernFlow
What ZernFlow is
ZernFlow is a free, open-source ManyChat alternative for building visual chatbot automations across social platforms. Its visual builder includes more than 15 node types for triggers, messages, conditions, delays, and other steps. The product handles contacts, broadcasts, drip sequences, comment-to-DM actions, rich messages with buttons and quick replies, and an inbox with human takeover. Supported channels include Instagram, Facebook, WhatsApp, Telegram, Twitter/X, Bluesky, and Reddit through the Zernio API. AI replies can use OpenAI, Anthropic, or Google, with a Vercel AI Gateway key listed as optional. ZernFlow also supports webhooks, HTTP requests, Google Sheets, Zapier, and external APIs. The MIT license allows users to inspect, self-host, or fork the code. Self-hosted deployment uses the user’s infrastructure and lists Node.js and a Supabase project in setup requirements. Web, API, and self-hosted access are available, with CRUD, webhook, scheduler, and sequence-processing endpoints. The Free plan costs nothing forever, with no monthly fees, per-account charges, or feature limits.
Who it suits
ZernFlow suits creators, small businesses, and agencies managing social-channel automations or client accounts. It is also aimed at teams wanting open-source, self-hosted, or API-connected chatbot workflows.
What it does well
- Visual builder with more than 15 node types
- Supports seven named social platforms
- AI replies using OpenAI, Anthropic, or Google
- MIT-licensed and self-hostable
- Free forever with no feature limits
What to know first
- WhatsApp requires a WhatsApp Business Account
- WhatsApp free-form messages have a 24-hour limit
- Approved WhatsApp templates are not supported yet
- Self-hosting requires Node.js and Supabase
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Free forever · No monthly fees · No per-account charges · No feature limits | Free |
As zernflow.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
ZernFlow brings visual automation, social messaging, AI replies, and self-hosting into one open-source product. Its free plan has no stated feature limits, while WhatsApp rules and setup requirements affect deployment choices.
Facts from ZernFlow's own pages
- AI
- AI replies can use OpenAI, Anthropic, or Google, with a Vercel AI Gateway key listed as an optional setup requirement. · github.com, 12 Oct 2026
- AI bot generation
- Yes · zernflow.com, 22 Sept 2026
- API
- The repository describes CRUD API routes under /api/v1 and webhook, job-scheduler, and sequence-processing endpoints. · github.com, 12 Oct 2026
- Deployment channels
- multichannel · zernflow.com, 22 Sept 2026
- Flow builder
- The visual flow builder provides 15+ node types for triggers, messages, conditions, delays, and other automation steps. · github.com, 12 Oct 2026
- Free plan
- Yes · zernflow.com, 22 Sept 2026
- Integrations
- ZernFlow uses the Zernio API for channel connections and supports webhooks, HTTP requests, and external APIs such as Google Sheets and Zapier. · zernflow.com, 12 Oct 2026
- Intended users
- The homepage describes the product for creators, small businesses, and agencies managing client accounts. · zernflow.com, 12 Oct 2026
- Messaging features
- The product lists comment-to-DM, rich messages with buttons and quick replies, broadcasts, drip sequences, and an inbox with human takeover. · github.com, 12 Oct 2026
- Open source
- The project is MIT licensed, and the maker says users can inspect, self-host, or fork the code. · zernflow.com, 12 Oct 2026
- Purpose
- ZernFlow is an open-source ManyChat alternative for building visual chatbot flows and managing contacts, broadcasts, drip campaigns, and live chat across social platforms. · github.com, 12 Oct 2026
- Security and data
- The maker says users own their automations, contacts, and data, but the opened pages do not state security certifications or compliance standards. · zernflow.com, 12 Oct 2026
- Self-hosting
- The maker says users can deploy ZernFlow on their own infrastructure; the repository setup calls for Node.js and a Supabase project. · github.com, 12 Oct 2026
- Social platforms
- It supports Instagram, Facebook, WhatsApp, Telegram, Twitter/X, Bluesky, and Reddit. · zernflow.com, 12 Oct 2026
- Visual flow builder
- Yes · zernflow.com, 22 Sept 2026
- WhatsApp limit
- WhatsApp requires a WhatsApp Business Account, and the README says free-form messages are accepted only within 24 hours of the contact's last message; approved message templates are not supported yet. · github.com, 12 Oct 2026
Where ZernFlow stands on Freedom251
- Chatbot Builders#79 of 257