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Tool
Category
Pricing
Free?
Updated
Humanloop
AI Agents
Freemium
✓
Mar 2026
→
Collaborative platform for prompt management, evaluation, and LLM fine-tuning
Best for: prompt-management
Rasa
AI Agents
Freemium
✓
Mar 2026
→
Open-source conversational AI framework for building contextual dialogue agents
Best for: open-source
Portkey AI
AI Agents
Freemium
✓
Mar 2026
→
AI gateway providing unified LLM access with reliability features and observability
Best for: AI-gateway