Tool
Flowise
Free tier: Check pricing (opens in a new tab)
From: Check pricing (opens in a new tab)
Checked October 16, 2026
- Strength. The open-source npm package flowise 3.1.4 is a low-code builder you can self-host.
- Weakness. The pricing page came back too thin to confirm a cloud free tier.
Checked October 15, 2026
Open-source, low-code builder for LLM flows you can self-host. Cloud free tier was not clearly confirmed.
Flowise is a low-code builder for LLM flows. The npm package and GitHub repo are the open-source path we could confirm. The pricing page came back thin in our crawl, so a cloud free tier is not confirmed. We did not install it.
Best for
- Visual flows on infrastructure you run yourself
- Teams already comfortable with a Node service
Not ideal for
- A confirmed free hosted plan — we could not verify one
- Code-first agent libraries, if that is all you need
What we checked
Docs checked means we opened the official site and the pricing and docs URLs on this page. We did not run a successful local install, so this is not a smoke test.
No local install attempted (SaaS/desktop/extension or install not feasible without account).
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Smoke-testedOpen sourceAgentChecked October 15, 2026
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From: Check pricing (opens in a new tab)
Checked October 16, 2026
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CrewAI
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Smoke-testedOpen sourceNew releaseAgentChecked October 15, 2026
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From: Check pricing (opens in a new tab)
Checked October 16, 2026
- Strength. We imported crewai 1.15.28, an open-source framework that splits a job across role-based agents.
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LangChain
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Smoke-testedOpen sourceNew releaseAgentChecked October 15, 2026
Free tier: Yes · Up to 5,000 base traces per month, then pay as you go.
From: $39/mo
Checked October 16, 2026
- Strength. We imported langchain 1.4.6, including create_agent, for composing tool-calling workflows in code.
- Weakness. LangSmith's developer plan includes 5,000 base traces per month before usage billing, and Plus is $39 per seat per month.
LlamaIndex
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Smoke-testedOpen sourceAgentChecked October 15, 2026
Free tier: Yes · 10,000 credits.
From: $50/mo
Checked October 16, 2026
- Strength. We imported llama-index-core 0.14.25, and the cloud free plan includes 10,000 credits.
- Weakness. Cloud Starter is $50 per month after the 10,000 free credits.