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Tool
Category
Pricing
Free?
Updated
Fixie AI
AI Agents
Freemium
✓
Mar 2026
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Platform for building conversational AI agents with memory, tools, and deployable hosting
Best for: conversational
Steamship
AI Agents
Freemium
✓
Mar 2026
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Cloud hosting platform for AI agents with built-in storage and multi-tenancy
Best for: agent-hosting
Browserless
AI Agents
Freemium
✓
Mar 2026
→
Cloud-hosted headless browser service for web automation and AI agent workflows
Best for: headless-browser
GPT Engineer
AI Agents
Freemium
✓
Mar 2026
→
AI agent that builds entire software projects from natural language prompts
Best for: code-generation
Arize Phoenix
AI Agents
Freemium
✓
Mar 2026
→
Open-source AI observability tool with interactive tracing and RAG evaluation
Best for: observability