✓
Tool
Category
Pricing
Free?
Updated
MindStudio
AI Agents
Freemium
✓
Mar 2026
→
No-code platform for building and deploying custom AI workers and agents
Best for: no-code
Hugging Face Agents
AI Agents
Free
✓
Mar 2026
→
Agent framework built into Hugging Face Transformers for model-powered tool use
Best for: Hugging Face
Fixie AI
AI Agents
Freemium
✓
Mar 2026
→
Platform for building conversational AI agents with memory, tools, and deployable hosting
Best for: conversational
Cassidy AI
AI Agents
Freemium
✓
Mar 2026
→
Team AI workspace with knowledge-trained agents integrated into business tools
Best for: team-AI
Arize Phoenix
AI Agents
Freemium
✓
Mar 2026
→
Open-source AI observability tool with interactive tracing and RAG evaluation
Best for: observability
Smolagents
AI Agents
Free
✓
Mar 2026
→
Lightweight Hugging Face agent framework where LLMs write code to use tools
Best for: Hugging Face
Relevance AI
AI Agents
Freemium
✓
Mar 2026
→
No-code platform for building and deploying AI agent teams for business
Best for: agents
Questflow
AI Agents
Freemium
✓
Mar 2026
→
Natural language multi-agent workflow platform for business automation
Best for: multi-agent
Julep
AI Agents
Freemium
✓
Mar 2026
→
Platform for building stateful, long-running AI agents with persistent memory
Best for: stateful
Agency Swarm
AI Agents
Free
✓
Mar 2026
→
Open-source framework for creating collaborative AI agent networks with specialized roles
Best for: agency-swarm
GPT-Pilot
AI Agents
Free
✓
Mar 2026
→
AI developer agent that iteratively builds production apps with human collaboration
Best for: developer-agent
Browserbase
AI Agents
Freemium
✓
Mar 2026
→
Cloud browser infrastructure for AI agents to automate web interactions at scale
Best for: browser-automation
AgentQL
AI Agents
Freemium
✓
Mar 2026
→
AI-powered web scraping using natural language queries instead of CSS selectors
Best for: web-scraping
Langfuse
AI Agents
Freemium
✓
Mar 2026
→
Open-source LLM observability platform for tracing, debugging, and monitoring AI agents
Best for: observability
LangSmith
AI Agents
Freemium
✓
Mar 2026
→
Developer platform for debugging and monitoring LangChain-based AI agent applications
Best for: LangChain
Braintrust
AI Agents
Freemium
✓
Mar 2026
→
Enterprise AI evaluation platform for logging, testing, and improving agent quality
Best for: evaluation
XAgent
AI Agents
Free
✓
Mar 2026
→
Open-source autonomous agent with hierarchical planning and sub-agent coordination
Best for: autonomous
AgentScope
AI Agents
Free
✓
Mar 2026
→
Fault-tolerant distributed multi-agent platform from Alibaba for production systems
Best for: multi-agent