Free
Semantic Kernel
Microsoft's SDK for building AI agents
AI FrameworksAgent Building
Software & Tools
Best AI Frameworks Tools
12 curated AI Frameworks Tools, updated 2026-10-22. Top picks include Semantic Kernel, smolagents, Pydantic AI. Compare free, freemium and paid options, then open a tool page or browse alternatives.
12 toolsUpdated 2026-10-22Free 11Freemium 1Paid 0
Free
smolagents
Hugging Face's minimalist agent library
AI FrameworksAgent Building
Free
Pydantic AI
Agent framework by the Pydantic team
AI FrameworksAgent Building
Free
CAMEL-AI
Pioneering open-source multi-agent society framework
AI FrameworksAgent Building
Free
AgentScope
Alibaba's multi-agent development framework
AI FrameworksAgent Building
Free
DSPy
Programming, not prompting, foundation models
AI FrameworksAI Open Source
Free
Langflow
Visual drag-and-drop builder for LLM apps
AI FrameworksAgent Building
Freemium
Letta
Stateful agents with long-term memory, from MemGPT
AI FrameworksAgent Building
Free
Transformers
The definitive library for pretrained models
AI Open SourceAI Frameworks
Free
Agno
Lightweight, fast framework for multi-modal agents
AI FrameworksAgent Building
Free
PyTorch
The de facto deep learning framework
AI Open SourceAI Frameworks
Free
MetaGPT
Multi-agent framework that simulates a software company
AI FrameworksAgent Building
How we curate this category
Every listing is reviewed by a human before publishing. We group tools by use case, keep pricing and category data current, and link to official websites — paid placement never determines order.