System design interview for IT companies

A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows

221 AI skills for construction: BIM analysis, cost estimation, scheduling, document control, and automation with Claude Code

Reusable Xcrawl skill definitions for multi-agent runtimes, focused on API-first web data workflows.

LEAKED SYSTEM PROMPTS FOR CHATGPT, CLAUDE, GEMINI, GROK, PERPLEXITY, CURSOR, LOVABLE, REPLIT, AND MORE! - AI SYSTEMS TRANSPARENCY FOR ALL! 👐

Free and Open Source Enterprise Resource Planning (ERP)

Real-time drone detection and tracking using YOLOv11x with heatmap visualization. Trained on custom UAV dataset, optimized for small, fast-moving targets.

Python SDK and Tools for Poland's KSeF (Krajowy System e-Faktur) v2.0 API.

This repository contains all MATLAB and Python codes used for Drones Detection and Identification using their RF signals.

faktury online API

Samodzielny skrypt Python do pobierania faktur z KSeF (Krajowy System e-Faktur).

The Arelle iXBRL Viewer allows Inline XBRL (or iXBRL) reports to be viewed interactively in a web browser. The viewer allows users to access the tagged XBRL data embedded in an iXBRL report.

Arelle open source XBRL platform

North Data API

Open-source React UI library built with Tailwind CSS. Production-ready components, blocks, and templates to help you build modern, accessible web apps faster.

Open multilingual construction cost database for AI Agents - 55K+ work items, 27K+ resources, 30 regions. Semantic search via Qdrant vector DB

A collection of DESIGN.md files analysis by popular brand design systems. Drop one into your project and let coding agents generate a matching UI.

🎨 The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes, landing pages, dashboards, slides, images & video — real files, …

Workflow for AI Agents enables automated conversion of CAD files (such as `.rvt`, `.ifc`, `.dwg`) using command-line converters on a local Windows machine

Awesome civil engineering software and programming reosurces

Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching. 42 regional catalogues, 21 languages, 71 modules. AGPL-3.0. v3.0 - pip install openconstructionerp

eForms SDK documentation

eForms is the notification standard for public procurement procedures in the EU. The eForms SDK is a collection of resources providing the foundation for building eForms applications.

A curated list of awesome tools, IDE integrations, frameworks, and other resources for developers working with Anthropic's Claude Code.

A powerful cross-platform UI toolkit for building native-quality iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript.

Open-source AI penetration testing tool to find and fix your app’s vulnerabilities.

An agentic skills framework & software development methodology that works.

Official, Anthropic-managed directory of high quality Claude Code Plugins.