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Tool
Category
Pricing
Free?
Updated
LangSmith
AI Agents
Freemium
✓
Mar 2026
→
Developer platform for debugging and monitoring LangChain-based AI agent applications
Best for: LangChain
Julep
AI Agents
Freemium
✓
Mar 2026
→
Platform for building stateful, long-running AI agents with persistent memory
Best for: stateful
Wordware
AI Agents
Freemium
✓
Mar 2026
→
Collaborative AI IDE for building agents and workflows in a document-like interface
Best for: AI-IDE
Voiceflow
AI Agents
Freemium
✓
Mar 2026
→
Collaborative platform for designing and deploying voice and chat AI agents
Best for: voice-agents
AgentQL
AI Agents
Freemium
✓
Mar 2026
→
AI-powered web scraping using natural language queries instead of CSS selectors
Best for: web-scraping
Browserless
AI Agents
Freemium
✓
Mar 2026
→
Cloud-hosted headless browser service for web automation and AI agent workflows
Best for: headless-browser
Humanloop
AI Agents
Freemium
✓
Mar 2026
→
Collaborative platform for prompt management, evaluation, and LLM fine-tuning
Best for: prompt-management
Weights & Biases Weave
AI Agents
Freemium
✓
Mar 2026
→
W&B toolkit for tracing, evaluating, and improving AI agent applications
Best for: W&B
Fixie AI
AI Agents
Freemium
✓
Mar 2026
→
Platform for building conversational AI agents with memory, tools, and deployable hosting
Best for: conversational