Code Quality Products
Hand-picked code quality tools and resources we actually use in production. Each item tested by developers, for developers.

Code Complete: A Practical Handbook of Software Construction
The definitive guide to software construction. Steve McConnell's comprehensive handbook covers every aspect of writing high-quality code, from design and architecture to debugging and testing. This book distills decades of software engineering wisdom into practical, actionable advice.
The definitive guide to software construction. Distills decades of software engineering wisdom into practical, actionable advice for writing high-quality code. Read full review.

Code Health Guardian: The Old-New Role of a Human Programmer in the AI Era
Essential guide for programmers navigating the AI era. This book explores the evolving role of human programmers as code health guardians, focusing on quality, maintainability, and the critical human judgment needed in an age of AI-assisted development. Learn how to leverage AI tools while maintaining code quality and technical excellence.
Essential guide for programmers navigating the AI era. Explores the evolving role of human programmers as code health guardians, focusing on quality and maintainability in AI-assisted development. Read full review.

Test-Driven Development: By Example
Kent Beck's foundational work on TDD that introduced the methodology of writing tests before code. This seminal book demonstrates TDD through practical examples including a multi-currency system and building a testing framework from scratch.
The foundational work on TDD that introduced the methodology of writing tests before code. Essential reading for understanding how tests drive design and reduce fear in programming. Read full review.

97 Things Every Programmer Should Know: Collective Wisdom from the Experts
Edited by Kevlin Henney, a curated set of timeless, page-length lessons from industry legends. Each item is a standalone insight you can read in five minutes.
Timeless, page-length lessons from industry legends. Perfect for busy developers—read one item in five minutes, learn something useful, put it down. Read full review.

The Art of Unit Testing: with Examples in JavaScript (3rd Edition)
Roy Osherove's concrete patterns and habits for writing useful tests, not just more tests. Learn how to write tests that actually help you, not just satisfy coverage metrics.
Taught me the difference between tests that help and tests that just exist. Osherove's focus on test quality over quantity—and when to use mocks vs. stubs—is essential. Read full review.

Working Effectively with Legacy Code
Michael Feathers' must-read for anyone inheriting messy systems, refactoring safely, or adding tests. Learn how to work with code you didn't write and make it better without breaking it.
The book I read when inheriting a codebase with no tests. Feathers' techniques for sprouting methods and dependency breaking gave me confidence to make changes safely. Read full review.

Refactoring: Improving the Design of Existing Code (2nd Edition)
Any fool can write code that a computer can understand. Good programmers write code that humans can understand.
Named refactoring moves, modern examples, and clear mechanics make this the go-to handbook whenever we touch legacy code. Read full review.

Clean Code: A Handbook of Agile Software Craftsmanship
Second-edition update of Robert C. Martin’s classic handbook on writing maintainable code, with refreshed case studies, smell catalogs, and refactoring practices for modern teams.
Second edition keeps Clean Code relevant—examples age, but the refreshed refactoring walkthroughs and smell catalog remain the clearest roadmap to maintainable code. Read full review.