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Expert OpinionsSimon Willison's April 2026 newsletter: Claude Opus 4.7, GPT-5.5 price hikes, Claude Mythos, ChatGPT Images 2.0, and the latest in LLM safety research.
TutorialsA practical guide to building AI Agents with Spring Boot 3, Java 21, and Spring AI — covering RAG, Tool Calling, MCP protocol, and ReAct pattern with the yu-ai-agent open-source project.
Expert OpinionsSimon Willison's April 2026 monthly newsletter: Anthropic Opus 4.7 and OpenAI GPT-5.5 launch with price hikes, Claude Mythos safety research, ChatGPT Images 2.0, and key AI trends.
Product ReviewsDeep dive into RuoYi-Vue-Pro: a Spring Boot + Vue open-source platform with 36,900+ Stars. Features SaaS multi-tenancy, Flowable workflows, CRM/ERP/MES modules, and AI integration for enterprise Java development.
Product ReviewsRedis creator antirez submitted a PR introducing the Array data type with 18 new commands including server-side regex search ARGREP. Simon Willison built a WebAssembly browser Playground with Claude Code for hands-on testing.
TutorialsSimon Willison used Claude Code's web version on his phone to add iNaturalist wildlife observation sync to his blog, going from prototype to production in just two days.
TutorialsSimon Willison built an iNaturalist display tool on his phone while camping using Claude Code, with a zero-cost serverless architecture of Python CLI + Git Scraping + static frontend.
Deep DivesDeep dive into Langflow, the open-source AI workflow builder with 147K GitHub Stars. Explore its drag-and-drop visual editor, LangChain integration, RAG building capabilities, and low-code AI development features.
Product ReviewsZotero MCP Plugin integrates Zotero with AI assistants like Claude via the MCP protocol, enabling literature search, full-text PDF analysis, and intelligent Q&A based on your personal reference library.
Product ReviewsFofaMap v2.0 is an AI-driven red team asset mapping tool built on Python3, featuring AI self-reflection for auto-tuning FOFA queries, MCP protocol support for Claude/Cursor integration, and intelligent Nuclei vulnerability scanning. 657 GitHub Stars.
Product ReviewsDeep analysis of JavaGuide, a 155K-Star GitHub project covering Java core, databases, distributed systems, high concurrency, system design, and AI development for backend interview prep.
TutorialsSimon Willison built an iNaturalist observation tool using his phone and Claude Code while camping, leveraging Git Scraping + GitHub Actions for a zero-server architecture.
Product ReviewsDeep dive into LibreChat, an open-source platform supporting GPT-5, Claude, Gemini, DeepSeek with unified access, built-in Agents, MCP protocol, code interpreter, and Docker deployment for self-hosted ChatGPT alternative.
TutorialsDeveloper Simon Willison used Claude Code for Web on his phone to build a wildlife sightings feature for his blog, syncing iNaturalist data with deep integration into search, RSS, and archives.
Product Reviewsawesome-LLM-resources is a GitHub repo with 8200+ Stars covering multimodal generation, AI Agents, model training/inference, MCP protocol, and more for LLM learners.
Deep DivesDeep dive into OpenAI Codex CLI's /goal command: from Ralph Loop origins and three-layer protection to Rust source architecture and the goal-oriented programming paradigm shift.
Deep DivesDeep analysis of Simon Willison's LLM Python library 0.32a0 alpha: message sequences, streaming typed parts, tool calling, and the design philosophy behind backward-compatible refactoring.
Deep DivesA deep dive into Graphify, the 41,000+ star GitHub project using knowledge graphs to solve context fragmentation in AI coding assistants like Claude Code and Cursor.