A developer built Trainlog, a voice-first AI sports journal that uses speech recognition and large language models to help users log workouts without friction. The project uses a deliberately simple s…
A developer released @ternaus/eslint-plugin-react, an independent React 19 continuation for ESLint 10, after the upstream eslint-plugin-react failed to support the new ESLint version. The plugin narro…
Block has open-sourced Berd, a desktop application that manages AI agents across projects, skills, tools, and models, emphasizing visible context as a key design principle. The app, built with Tauri 2…
A multi-tenant B2B SaaS was built in a 92-hour AI-augmented engineering sprint, with 91,344 tracked repository text lines, 50 canonical forward-only PostgreSQL migrations at Release 1.5, 527/527 autom…
Block Inc., the fintech company behind Square and Cash App, has open-sourced Berd, a desktop application for managing AI agents, on GitHub under the Apache 2.0 license. Built on Tauri 2 and React 19, …
A developer built AI Prompt Lab, a full-stack application using Java 21, Spring Boot, React 19, TypeScript, PostgreSQL, and OpenRouter, to manage reusable AI prompts as structured assets. The applicat…
A developer built an AI agent to act as a marketing boss, which directed a 30-day campaign for two open source projects, including producing an 11-part demo video. The agent's commands led to the crea…
A developer built a Perplexity-style web search agent using Bun, React 19, Tavily, OpenRouter, and Postgres, then critically evaluated whether it truly deserved the 'agent harness' label. The engineer…
A developer building a streaming chat UI in Next.js discovered that their own performance measurement code (console.log and ref mutations) was preventing the React 19 compiler from optimizing componen…
A developer analyzed Yhuu, an app built with React 19, Supabase, and the Gemini API that offers anonymous relationship loyalty testing. The app's structure mirrors anonymous-messaging platforms like N…
A developer at CitizenApp built nine AI features using React 19's `useActionState` hook, which eliminates the need for multiple `useState` calls to manage loading, error, and result states in form-dri…
A developer at CitizenApp implemented React 19's `useOptimistic` hook to eliminate 8-12 second loading spinners in AI features, replacing brittle manual state management with declarative optimistic up…