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Tool
Category
Pricing
Free?
Updated
Fixie AI
AI Agents
Freemium
✓
Mar 2026
→
Platform for building conversational AI agents with memory, tools, and deployable hosting
Best for: conversational
Julep
AI Agents
Freemium
✓
Mar 2026
→
Platform for building stateful, long-running AI agents with persistent memory
Best for: stateful
Semantic Kernel
AI Agents
Free
✓
Mar 2026
→
Microsoft SDK for building AI agents with plugins and memory
Best for: semantic-kernel
Amazon Bedrock Agents
AI Agents
Paid
—
Mar 2026
→
AWS-native AI agent builder using foundation models with enterprise security
Best for: AWS