Best development framework AI tools

Craft is an AI-powered development framework and Next.js starter kit designed to accelerate SaaS product development. It leverages Anthropic's Claude AI with 10 specialized Skills and 14 pre-configured MCP servers to generate production-ready, clean code. Craft offers adaptive quality levels (Rapid, Balanced, Crafted) to match your product's stage, integrating essential boilerplate features like authentication, payments, and databases, enabling developers to ship features in days, not months.

Agents-Flex is an open-source Java framework for building LLM-powered applications. As a lightweight and elegant alternative to LangChain, it simplifies development with a highly extensible architecture. It supports a wide range of LLMs, vector databases, and advanced features like function calling, RAG, and agent orchestration. Its framework-agnostic nature and low JDK requirement (8+) make it a versatile choice for any Java developer.