✓
Tool
Category
Pricing
Free?
Updated
Observable
AI Data Analysis
Freemium
✓
Mar 2026
→
Reactive JavaScript notebooks for interactive data visualization and data apps.
Best for: data-analysis
Helicone
AI Agents
Freemium
✓
Mar 2026
→
Open-source LLM proxy for logging, monitoring, and analyzing all AI API calls
Best for: LLM-proxy
AgentOps
AI Coding
Freemium
✓
Mar 2026
→
Monitoring and observability platform for AI agents with tracing and analytics.
Best for: monitoring
Arize Phoenix
AI Agents
Freemium
✓
Mar 2026
→
Open-source AI observability tool with interactive tracing and RAG evaluation
Best for: observability
Portkey AI
AI Agents
Freemium
✓
Mar 2026
→
AI gateway providing unified LLM access with reliability features and observability
Best for: AI-gateway
Langfuse
AI Agents
Freemium
✓
Mar 2026
→
Open-source LLM observability platform for tracing, debugging, and monitoring AI agents
Best for: observability
Braintrust
AI Agents
Freemium
✓
Mar 2026
→
Enterprise AI evaluation platform for logging, testing, and improving agent quality
Best for: evaluation
PromptLayer
AI Agents
Freemium
✓
Mar 2026
→
Prompt management platform with logging and analytics for LLM API calls
Best for: prompt-management
Prefect
AI Automation
Freemium
✓
Mar 2026
→
Python-native workflow orchestration for data engineering and ML pipelines.
Best for: data-engineering
Dagster
AI Automation
Freemium
✓
Mar 2026
→
Open-source asset-centric data orchestration for building and managing data pipelines.
Best for: data-engineering