A collective list of free APIs

Local UI to run and train LLMs and diffusion models, including Qwen3.8, Kimi K3, MiniMax-H

100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner

Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发

Stable Diffusion web UI