✓
Tool
Category
Pricing
Free?
Updated
Cassidy AI
AI Agents
Freemium
✓
Mar 2026
→
Team AI workspace with knowledge-trained agents integrated into business tools
Best for: team-AI
Relevance AI
AI Agents
Freemium
✓
Mar 2026
→
No-code platform for building and deploying AI agent teams for business
Best for: agents
Nooks AI
AI Agents
From $1/mo
—
Mar 2026
→
AI sales platform with autonomous dialer and real-time coaching for SDR teams
Best for: sales-acceleration
Wordware
AI Agents
Freemium
✓
Mar 2026
→
Collaborative AI IDE for building agents and workflows in a document-like interface
Best for: AI-IDE
Microsoft Copilot Studio
AI Agents
Freemium
✓
Mar 2026
→
Low-code platform for building custom Microsoft Copilot AI agents for business
Best for: Microsoft
Questflow
AI Agents
Freemium
✓
Mar 2026
→
Natural language multi-agent workflow platform for business automation
Best for: multi-agent
Ada
AI Agents
From $1/mo
—
Mar 2026
→
AI customer service agent platform with no-code builder and omnichannel deployment
Best for: customer-service
Rasa
AI Agents
Freemium
✓
Mar 2026
→
Open-source conversational AI framework for building contextual dialogue agents
Best for: open-source
Voiceflow
AI Agents
Freemium
✓
Mar 2026
→
Collaborative platform for designing and deploying voice and chat AI agents
Best for: voice-agents
Thoughtly
AI Agents
Freemium
✓
Mar 2026
→
AI voice agent platform for building phone agents for sales and support
Best for: voice-agent
Langfuse
AI Agents
Freemium
✓
Mar 2026
→
Open-source LLM observability platform for tracing, debugging, and monitoring AI agents
Best for: observability
LangSmith
AI Agents
Freemium
✓
Mar 2026
→
Developer platform for debugging and monitoring LangChain-based AI agent applications
Best for: LangChain
Helicone
AI Agents
Freemium
✓
Mar 2026
→
Open-source LLM proxy for logging, monitoring, and analyzing all AI API calls
Best for: LLM-proxy
Portkey AI
AI Agents
Freemium
✓
Mar 2026
→
AI gateway providing unified LLM access with reliability features and observability
Best for: AI-gateway
Braintrust
AI Agents
Freemium
✓
Mar 2026
→
Enterprise AI evaluation platform for logging, testing, and improving agent quality
Best for: evaluation
Humanloop
AI Agents
Freemium
✓
Mar 2026
→
Collaborative platform for prompt management, evaluation, and LLM fine-tuning
Best for: prompt-management
PromptLayer
AI Agents
Freemium
✓
Mar 2026
→
Prompt management platform with logging and analytics for LLM API calls
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
Galileo AI
AI Agents
From $1/mo
—
Mar 2026
→
AI quality management platform for automated LLM evaluation and hallucination detection
Best for: evaluation
Artisan AI
AI Agents
From $750/mo
—
Mar 2026
→
AI-first sales platform with autonomous AI BDR agent for automated outbound
Best for: AI-BDR
Vertex AI Reasoning Engine
AI Agents
Paid
—
Mar 2026
→
Google Cloud managed runtime for deploying and scaling AI agents in production
Best for: Google Cloud