What is the best Agent Frameworks tool for Tool Use / Function Calling?

Based on signal score, AutoGPT leads this list with 184,683 GitHub stars. It is categorized under Agent Frameworks.

How do these Agent Frameworks tools compare on price?

hermes agent: Open-source. LangChain: Open-source. Wordware: Free / AI Builder $199/mo / Company $899/mo / Enterprise custom. TradingAgents: Open-source. deer flow: Open-source. MetaGPT: Open-source. CrewAI: Open-source. CowAgent: Open-source. agno: Open-source.

Which of these tools works best with Tool Use / Function Calling?

Tools with the highest use-case tag match for Tool Use / Function Calling in this list: AutoGPT, hermes agent, LangChain. Use-case match is one of three signals in our ranking; see the methodology link above for how it's weighted.

Are there open-source options in this list?

hermes agent (MIT), LangChain (MIT), TradingAgents (Apache-2.0), deer flow (MIT), MetaGPT (MIT), CrewAI (MIT), CowAgent (MIT), agno (Apache-2.0).

How often is this list updated?

GitHub stats refresh weekly. ProductHunt votes refresh weekly. Pricing data refreshes daily. This page last verified 2026-06-01.

The directory

Best tools·Agent Frameworks·Tool Use / Function Calling

Best Agent Frameworks for Tool Use / Function Calling

10 Agent Frameworks tools ranked by GitHub activity, community traction, and use‑case match — as of 2026-06-01.

Ranked by signal score (GitHub stars × 0.5 + PH votes × 0.3 + use-case tag match × 0.2). Data as of 2026-06-01. How we rank →

10 tools

01
Significant-Gravitas
AutoGPT
AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.
184,683
Agent Frameworks Website →
02
NousResearch
hermes agent
The agent that grows with you
153,604Open-source
Agent Frameworks Website →
03
LangChain
LangChain
Open-source framework for LLM applications, agents, and RAG pipelines.
136,904Open-source
Agent Frameworks Website →
04
Wordware
Wordware
Document-like, natural-language IDE for building and deploying AI agents. Write agent logic in plain English with inline loops, conditionals, and model calls; deploy as a REST API in one click; 2,000+ pre-built integrations. YC S24. $30M seed (Spark Capital + Felicis). 9,903 PH upvotes — #1 of Year 2024. Note: company pivoted to Sauna (AI knowledge-work companion) in mid-2025; V1 platform still accessible at app.wordware.ai but is not the primary product.
9,918Free / AI Builder $199/mo / Company $899/mo / Enterprise custom
Agent Frameworks Website →
05
TauricResearch
TradingAgents
TradingAgents: Multi-Agents LLM Financial Trading Framework
81,316Open-source
Agent Frameworks Website →
06
bytedance
deer flow
An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.
68,853Open-source
Agent Frameworks Website →
07
FoundationAgents
MetaGPT
🌟 The Multi-Agent Framework: First AI Software Company, Towards Natural Language Programming
68,443Open-source
Agent Frameworks Website →
08
CrewAI
CrewAI
Role-based multi-agent orchestration framework with task delegation and tool use.
51,547Open-source
Agent Frameworks Website →
09
zhayujie
CowAgent
CowAgent (chatgpt-on-wechat) 是基于大模型的超级AI助理，能主动思考和任务规划、访问操作系统和外部资源、创造和执行Skills、通过长期记忆和知识库不断成长，比OpenClaw更轻量和便捷。同时支持微信、飞书、钉钉、企微、QQ、公众号、网页等接入，可选择DeepSeek/OpenAI/Claude/Gemini/ MiniMax/Qwen/GLM/LinkAI，能处理文本、语音、图片和文件，可快速搭建个人AI助理和企业数字员工。
44,612Open-source
Agent Frameworks Website →
10
agno-agi
agno
Build, run, and manage agent platforms.
40,260Open-source
Agent Frameworks Website →

How we chose

Signal score weights: GitHub stars (50%), ProductHunt votes (30%), use-case tag match (20%). Minimum 4 qualifying tools per page. Only tools in published state with ≥80% data completeness included.

Full methodology →

Questions

What is the best Agent Frameworks tool for Tool Use / Function Calling?: Based on signal score, AutoGPT leads this list with 184,683 GitHub stars. It is categorized under Agent Frameworks.
How do these Agent Frameworks tools compare on price?: hermes agent: Open-source. LangChain: Open-source. Wordware: Free / AI Builder $199/mo / Company $899/mo / Enterprise custom. TradingAgents: Open-source. deer flow: Open-source. MetaGPT: Open-source. CrewAI: Open-source. CowAgent: Open-source. agno: Open-source.
Which of these tools works best with Tool Use / Function Calling?: Tools with the highest use-case tag match for Tool Use / Function Calling in this list: AutoGPT, hermes agent, LangChain. Use-case match is one of three signals in our ranking; see the methodology link above for how it's weighted.
Are there open-source options in this list?: hermes agent (MIT), LangChain (MIT), TradingAgents (Apache-2.0), deer flow (MIT), MetaGPT (MIT), CrewAI (MIT), CowAgent (MIT), agno (Apache-2.0).
How often is this list updated?: GitHub stats refresh weekly. ProductHunt votes refresh weekly. Pricing data refreshes daily. This page last verified 2026-06-01.