Comprehensive guide to 12 major open-source AI coding tools, organized by architecture (CLI, IDE extensions, self-hosted, agent platforms, browser-based). Compares features, licenses, maturity, and provides clear guidance on tool selection by use case.

Comprehensive guide on Domain-Driven Design covering strategic patterns (bounded contexts, context mapping) and tactical patterns (entities, value objects, aggregates, domain events). Includes practical Python code examples and emphasizes creating shared ubiquitous language between technical and business teams.

Comprehensive guide covering three major architecture patterns—Layered, Hexagonal, and Clean—explaining their structure, implementation approaches, and when to use each. Includes visual diagrams and code examples to illustrate each pattern's design principles.