Free no-code AI agent builders (2026)
Visual and prompt-based builders for making agents and apps without code, with a free plan or open-source edition. Here are the top 25 of 40 from the AgentScout directory.
Updated
How we picked and ranked: tools are matched by category, the pricing each maker states and what each tool says it does. They are ranked by GitHub stars as recorded on each listing (link checks 2026-10-21); tools without a tracked repo follow, by listing maturity. No paid placements.
1. Langflow
Visual drag-and-drop builder for AI agents and workflows that you can run locally, deploy as an API or expose as an MCP server.
Pricing (as stated): Open source + cloud · Mature
2. FastGPT
AI agent building platform with knowledge-base RAG, data processing and a visual workflow editor for deploying question-answering and automation apps.
Pricing (as stated): Free cloud plan; Basic ¥99/mo, Advanced ¥599/mo; self-host under the FastGPT Open Source License · Mature
3. Sim Studio
Workspace for visually building, deploying and monitoring AI agents and workflows.
Pricing (as stated): Open source + cloud · Mature
4. Onlook
An open-source visual editor for React and Tailwind apps where you design on a canvas and an AI agent writes the code. Edit layouts like in Figma, then export clean code to your own repo.
Pricing (as stated): Free and open source (Apache-2.0); hosted cloud version in early access. · Mature
5. Activepieces
Open-source automation platform with AI agents and hundreds of pieces usable as MCP servers.
Pricing (as stated): Open source + cloud · Mature
6. MaxKB
Open-source platform for building enterprise agents and knowledge-base assistants.
Pricing (as stated): Open source · Mature
7. Botpress
Platform for building and deploying LLM-powered chatbots and agents, with a visual studio, integrations hub, CLI and SDK.
Pricing (as stated): Free plan; Plus $150/mo and Team $750/mo billed annually; Enterprise custom · Mature
8. InsForge
Open-source backend platform that gives coding agents a database, auth and storage.
Pricing (as stated): Open source + cloud · Mature
9. Astron Agent
iFlytek's enterprise agentic workflow platform for building super agents.
Pricing (as stated): Open source · Mature
10. Unstract
LLM-powered platform for extracting structured data from documents via APIs and ETL pipelines.
Pricing (as stated): Open source + cloud · Mature
11. Fragments
E2B's open-source Next.js template for AI-generated apps, like Claude Artifacts or v0, with generated code run in secure E2B sandboxes.
Pricing (as stated): Free and open source (Apache-2.0); needs an E2B API key and a model provider key · Mature
12. Baserow
No-code platform for databases, apps, automations and AI agents, an Airtable alternative available as cloud or self-hosted.
Pricing (as stated): Free plan; Premium $10/user/mo yearly ($12 monthly), Advanced $18 ($22), Enterprise on request; self-host available (open core, MIT) · Mature
13. Nexent
Zero-code platform that generates AI agents from plain-language descriptions.
Pricing (as stated): Open source · Mature
14. PySpur
Visual playground for building and iterating on agent workflows.
Pricing (as stated): Open source · No recent updates (last commit Jul 2025)
15. VibeSDK
Cloudflare's open-source kit for running your own vibe-coding platform.
Pricing (as stated): Open source · Mature
16. Yuanjing Wanwu
China Unicom's enterprise, multi-tenant platform for building agents, workflows and RAG apps with model management.
Pricing (as stated): Open source · Active
17. ByteChef
Open-source platform for AI agents and workflow automation with hundreds of connectors that you can self-host or embed in a SaaS product.
Pricing (as stated): Open source + cloud · Active
18. Giselle
Open-source AI agent studio for building agentic workflows with a visual builder.
Pricing (as stated): Open source + cloud · Active
19. Puter AI Builder
Puter AI Builder turns a plain-language description into a working app or website that can be published to a real URL, with no code; it is an open-source alternative to Lovable, Replit and v0 from the team behind Puter.
Pricing (as stated): Open source (Apache-2.0); hosted builder at builder.puter.com is free to start · Active
20. Taskade AI Agents
No-code builder for AI agents inside Taskade that use your data, trigger automations and ship as live apps.
Pricing (as stated): Freemium · Active
21. Bolt
app buildersFreemiumPrompt-to-app builder that runs full-stack apps in the browser.
Pricing (as stated): Free tier + paid plans · Mature
22. Lindy
no-code buildersFreemiumNo-code AI assistants for email, meetings and ops.
Pricing (as stated): Free tier + paid plans · Mature
23. Make
no-code buildersFreemiumVisual automation platform with AI agents.
Pricing (as stated): Free tier + paid plans · Mature
24. n8n
no-code buildersSource-available + cloudWorkflow automation with AI agent nodes; self-host or cloud.
Pricing (as stated): Self-host free; paid cloud · Mature
25. Relevance AI
no-code buildersFreemiumNo-code platform to build AI agent teams for business work.
Pricing (as stated): Free tier + paid plans · Mature
FAQ
What are the best free no-code AI agent builders?
Ranked by tracked GitHub stars, the top free no-code AI agent builders in our directory are Langflow, FastGPT, Sim Studio, Onlook, Activepieces. Stars measure popularity, not fit, so compare a few against your own task.
How many free no-code AI agent builders does AgentScout list?
40 tools match. This page shows the top 25. Pricing mix on this page: Open source + cloud (10), Open source (8), Freemium (5), Source-available + cloud (2).
Are these tools really free?
Pricing is what each maker states on their site. Open-source tools are free to self-host but may need a paid model API key or offer paid cloud plans; freemium tools have a free plan with limits. Check each official site.
Where can I see every tool for building apps without code?
Our task page lists all 63 tools we match to building apps without code.
Related: All tools for building apps without code · Best No-Code AI Agent Builders · no-code builders (26) · app builders (14)
Similar searches: Open-source AI workflow automation tools
By role: For founders and small businesses · For product managers · For agencies
All popular searches · AI agents by role · Free tools
Related categories: No-code builders · App builders
Facts come from our directory listings; pricing is as each maker states it and can change. Check official sites before you choose.