Architecture Tools

Free Gemini playground with generous free tier

Anthropic Console

$5 credit

Claude workbench for testing prompts

OpenAI Playground

$5 credit

GPT-4 testing and fine-tuning

OCI GenAI

Oracle Cloud generative AI service

AI Frameworks

LangChain

Framework for LLM-powered applications

LlamaIndex

Data framework for RAG applications

Vercel AI SDK

TypeScript toolkit for AI applications

LangGraph

Multi-agent orchestration framework

Vector Databases

Pinecone

Managed vector database for semantic search

Weaviate

Open-source vector database

Chroma

Lightweight embedding database

pgvector

Vector extension for PostgreSQL

Deployment & Hosting

Vercel

Frontend deployment with edge functions

Railway

$5 credit

Full-stack deployment platform

Replit

Browser-based development & hosting

OCI Container Instances

Serverless containers on Oracle Cloud

Diagram Tools

Mermaid

Code-based diagram generation

Excalidraw

Hand-drawn style whiteboard

draw.io

Full-featured diagramming

Eraser.io

Technical diagrams with AI

AI Coding Tools

Claude Code

Pro

Anthropic CLI for agentic coding

Cursor

AI-powered code editor

GitHub Copilot

Paid

AI pair programmer

Vercel v0

AI UI generation

LLM Observability

Langfuse

Open-source LLM observability

LangSmith

LangChain tracing & evaluation

Helicone

LLM logging and analytics

Arize Phoenix

ML observability platform

MCP Resources

MCP Specification

Docs

Model Context Protocol documentation

MCP Servers

Official server implementations

MCP TypeScript SDK

Build custom MCP servers

Smithery