What is the best free alternative to Google Opal?
Windmill is the closest free alternative to Google Opal: same Workflow Automation sub-category, and it is free. Open-source, self-hostable with unlimited executions on the free tier
Best free Google Opal alternatives
Looking for a free alternative to Google Opal? Here are 9 workflow automation worth trying — 9 with a free tier. Google Opal itself is free.
| Tool | Google Opal (you searched) | Windmill | Langflow | Flowise |
|---|---|---|---|---|
| Pricing | free | free | free | free |
| Best for | Describe an app in plain language and Opal builds a shareable multi-step AI workflow | Open-source, self-hostable with unlimited executions on the free tier | Open source with 138k GitHub stars, free desktop app and free cloud account | Drag-and-drop builder for chatbots, agents and RAG flows |
| Visit | Open ↗ | Open ↗ | Open ↗ | Open ↗ |
Google Opal alternatives — straight answers
Are there free Google Opal alternatives?
Yes — 9 of the 9 alternatives listed here are free or freemium: Windmill, Langflow, Flowise, Sim, LangBot. None of them are paid-only.
Is Google Opal free?
Google Opal is free. There is no paid plan attached to it in the catalog.
How were these Google Opal alternatives chosen?
They are the other tools in Workflow Automation, then the rest of AI Agents & Automation, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.
All Google Opal alternatives
Browse Workflow Automation →Windmill
Workflow Automation
✦ WhyA Google Opal alternative — Open-source, self-hostable with unlimited executions on the free tier.
- Open-source, self-hostable with unlimited executions on the free tier
- Turns scripts (Python/TS/Go/Bash/SQL) into flows and full internal apps
- Kubernetes/Docker/Fargate deployable with a hybrid seat+compute enterprise pricing model
Langflow
Workflow Automation
✦ WhyA Google Opal alternative — Open source with 138k GitHub stars, free desktop app and free cloud account.
- Open source with 138k GitHub stars, free desktop app and free cloud account
- Drag-and-drop visual builder for agents and RAG pipelines on top of LangChain primitives
- Deep integrations across major LLMs, vector DBs and Google Cloud/Slack/MongoDB
✦ WhyA Google Opal alternative — Drag-and-drop builder for chatbots, agents and RAG flows.
- Drag-and-drop builder for chatbots, agents and RAG flows
- Self-host free with Docker or npm, with many model and vector store integrations
- Agentflow for multi-agent orchestration
- Embeddable chat widget and API output
✦ WhyA Google Opal alternative — Visual canvas for building, deploying and monitoring AI agents and workflows.
- Visual canvas for building, deploying and monitoring AI agents and workflows
- Open source and self-hostable
- Copilot that helps assemble workflows from natural language
- Integrations with common tools and knowledge bases
✦ WhyA Google Opal alternative — Builds AI bots for WeChat, QQ, Discord, Slack, Telegram and other chat platforms.
- Builds AI bots for WeChat, QQ, Discord, Slack, Telegram and other chat platforms
- Plugs into Dify, n8n, Coze and other workflow back ends
- Plugin system and web admin panel
- Free and open source, self-hosted
✦ WhyA Google Opal alternative — Open-source version of ByteDance's Coze agent builder with visual workflows.
- Open-source version of ByteDance's Coze agent builder with visual workflows
- Plugins, knowledge bases, databases and memory for agents
- Apache 2.0 licensed, self-hosted with Docker
- Connects to OpenAI and other model providers
✦ WhyA Google Opal alternative — Open-source platform for building LLM workflows, RAG and multi-agent apps.
- Open-source platform for building LLM workflows, RAG and multi-agent apps
- Strong document parsing with OCR, tables and layout analysis
- Loops, parallelism and human-in-the-loop steps
- Apache 2.0, self-hosted
Zapier
Workflow Automation
✦ WhyA Google Opal alternative — Connect 8,000+ apps with AI agents.
- Connect 8,000+ apps with AI agents
- Natural-language automation builder
- AI steps, chatbots and tables
- Free tier for basic Zaps
n8n
Workflow Automation
✦ WhyA Google Opal alternative — Open-source, self-hostable automation.
- Open-source, self-hostable automation
- Visual AI-agent and LLM nodes
- Full code when you need it
- Free to run yourself