Subcategory

Testing

6 tools
Beeceptor
freemium

Mock API server that generates realistic responses from specs or prompts using AI

API design mocking
Confident AI
freemium

AI quality platform and home of the DeepEval LLM evaluation framework

Observability
LangSmith
freemium

LLM observability and testing platform for debugging AI applications

Observability
MCP Inspector
open-source

Official open-source visual tool for testing and debugging MCP servers.

Mcp servers
MCPJam Inspector
freemium

Local-first tool to test, debug, and evaluate MCP servers, MCP apps, and ChatGPT apps.

Mcp servers
Mockoon
open-source

Open-source tool to create and run mock REST APIs locally in seconds

API design mocking